./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 02:38:27,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 02:38:27,336 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 02:38:27,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 02:38:27,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 02:38:27,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 02:38:27,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 02:38:27,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 02:38:27,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 02:38:27,372 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 02:38:27,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 02:38:27,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 02:38:27,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 02:38:27,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 02:38:27,375 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 02:38:27,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 02:38:27,376 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 02:38:27,377 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 02:38:27,378 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 02:38:27,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 02:38:27,378 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 02:38:27,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 02:38:27,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 02:38:27,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 02:38:27,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 02:38:27,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 02:38:27,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 02:38:27,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 02:38:27,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 02:38:27,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 02:38:27,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 02:38:27,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 02:38:27,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:38:27,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 02:38:27,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 02:38:27,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 02:38:27,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 02:38:27,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 02:38:27,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 02:38:27,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 02:38:27,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 02:38:27,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 02:38:27,389 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:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2024-10-11 02:38:27,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 02:38:27,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 02:38:27,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 02:38:27,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 02:38:27,728 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 02:38:27,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2024-10-11 02:38:29,075 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 02:38:29,377 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 02:38:29,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2024-10-11 02:38:29,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9921f79e2/f1fdaee6768c412eba80896190074ff1/FLAGb76266fab [2024-10-11 02:38:29,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/9921f79e2/f1fdaee6768c412eba80896190074ff1 [2024-10-11 02:38:29,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 02:38:29,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 02:38:29,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 02:38:29,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 02:38:29,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 02:38:29,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:38:29" (1/1) ... [2024-10-11 02:38:29,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@743c186e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:29, skipping insertion in model container [2024-10-11 02:38:29,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:38:29" (1/1) ... [2024-10-11 02:38:29,505 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 02:38:29,838 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2024-10-11 02:38:30,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:38:30,063 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 02:38:30,074 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-10-11 02:38:30,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [169] [2024-10-11 02:38:30,075 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [528] [2024-10-11 02:38:30,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [623] [2024-10-11 02:38:30,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [813] [2024-10-11 02:38:30,077 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [828] [2024-10-11 02:38:30,077 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [837] [2024-10-11 02:38:30,077 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2419] [2024-10-11 02:38:30,078 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2785] [2024-10-11 02:38:30,078 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2820] [2024-10-11 02:38:30,106 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2024-10-11 02:38:30,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 02:38:30,208 INFO L204 MainTranslator]: Completed translation [2024-10-11 02:38:30,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30 WrapperNode [2024-10-11 02:38:30,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 02:38:30,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 02:38:30,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 02:38:30,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 02:38:30,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,246 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,288 INFO L138 Inliner]: procedures = 93, calls = 353, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 948 [2024-10-11 02:38:30,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 02:38:30,289 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 02:38:30,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 02:38:30,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 02:38:30,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,360 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-10-11 02:38:30,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,395 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 02:38:30,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 02:38:30,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 02:38:30,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 02:38:30,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (1/1) ... [2024-10-11 02:38:30,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 02:38:30,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:38:30,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 02:38:30,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 02:38:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 02:38:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-10-11 02:38:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-10-11 02:38:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-11 02:38:30,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-11 02:38:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-11 02:38:30,597 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-11 02:38:30,597 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-11 02:38:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-11 02:38:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-10-11 02:38:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-10-11 02:38:30,601 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-11 02:38:30,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-11 02:38:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-10-11 02:38:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-10-11 02:38:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-11 02:38:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-11 02:38:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-11 02:38:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-11 02:38:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-11 02:38:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-11 02:38:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-11 02:38:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-11 02:38:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-11 02:38:30,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-11 02:38:30,602 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-11 02:38:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-11 02:38:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-10-11 02:38:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-10-11 02:38:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-10-11 02:38:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-10-11 02:38:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-11 02:38:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-11 02:38:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-10-11 02:38:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-10-11 02:38:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-11 02:38:30,603 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-11 02:38:30,603 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-11 02:38:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-11 02:38:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-11 02:38:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-11 02:38:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-11 02:38:30,604 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-11 02:38:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 02:38:30,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 02:38:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 02:38:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 02:38:30,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 02:38:30,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 02:38:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 02:38:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 02:38:30,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 02:38:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 02:38:30,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 02:38:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 02:38:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-11 02:38:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-11 02:38:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-11 02:38:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-11 02:38:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-11 02:38:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-11 02:38:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-11 02:38:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-11 02:38:30,642 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-10-11 02:38:30,642 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-10-11 02:38:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-11 02:38:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-11 02:38:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-11 02:38:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-11 02:38:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-11 02:38:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-11 02:38:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-10-11 02:38:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-10-11 02:38:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 02:38:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 02:38:30,643 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-11 02:38:30,643 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-11 02:38:30,859 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 02:38:30,861 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 02:38:32,157 INFO L? ?]: Removed 474 outVars from TransFormulas that were not future-live. [2024-10-11 02:38:32,158 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 02:38:32,247 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 02:38:32,247 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 02:38:32,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:38:32 BoogieIcfgContainer [2024-10-11 02:38:32,248 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 02:38:32,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 02:38:32,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 02:38:32,255 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 02:38:32,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:38:29" (1/3) ... [2024-10-11 02:38:32,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9114f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:38:32, skipping insertion in model container [2024-10-11 02:38:32,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:38:30" (2/3) ... [2024-10-11 02:38:32,257 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9114f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:38:32, skipping insertion in model container [2024-10-11 02:38:32,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:38:32" (3/3) ... [2024-10-11 02:38:32,258 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2024-10-11 02:38:32,274 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 02:38:32,275 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 02:38:32,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 02:38:32,370 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e17b9e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 02:38:32,370 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 02:38:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 583 states, 446 states have (on average 1.7085201793721974) internal successors, (762), 466 states have internal predecessors, (762), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2024-10-11 02:38:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-11 02:38:32,396 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:38:32,396 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:38:32,397 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:38:32,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:38:32,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1459857641, now seen corresponding path program 1 times [2024-10-11 02:38:32,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:38:32,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856241776] [2024-10-11 02:38:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:38:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:38:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:38:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:38:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:38:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-11 02:38:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 02:38:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-11 02:38:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:38:33,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:38:33,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856241776] [2024-10-11 02:38:33,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856241776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:38:33,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:38:33,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 02:38:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344203447] [2024-10-11 02:38:33,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:38:33,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:38:33,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:38:33,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:38:33,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:38:33,845 INFO L87 Difference]: Start difference. First operand has 583 states, 446 states have (on average 1.7085201793721974) internal successors, (762), 466 states have internal predecessors, (762), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 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) [2024-10-11 02:38:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:38:41,352 INFO L93 Difference]: Finished difference Result 1441 states and 2511 transitions. [2024-10-11 02:38:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 02:38:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 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 56 [2024-10-11 02:38:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:38:41,386 INFO L225 Difference]: With dead ends: 1441 [2024-10-11 02:38:41,387 INFO L226 Difference]: Without dead ends: 859 [2024-10-11 02:38:41,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 02:38:41,406 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 920 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 5337 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 5537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 5337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-11 02:38:41,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 2274 Invalid, 5537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [200 Valid, 5337 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-11 02:38:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-10-11 02:38:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 589. [2024-10-11 02:38:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 452 states have (on average 1.6946902654867257) internal successors, (766), 472 states have internal predecessors, (766), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2024-10-11 02:38:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 983 transitions. [2024-10-11 02:38:41,653 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 983 transitions. Word has length 56 [2024-10-11 02:38:41,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:38:41,655 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 983 transitions. [2024-10-11 02:38:41,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 6 states have internal predecessors, (37), 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) [2024-10-11 02:38:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 983 transitions. [2024-10-11 02:38:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-11 02:38:41,664 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:38:41,664 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:38:41,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 02:38:41,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:38:41,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:38:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -587309089, now seen corresponding path program 1 times [2024-10-11 02:38:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:38:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312807623] [2024-10-11 02:38:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:38:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:38:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:38:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:38:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:38:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 02:38:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 02:38:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 02:38:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:38:42,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:38:42,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312807623] [2024-10-11 02:38:42,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312807623] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:38:42,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:38:42,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 02:38:42,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335617078] [2024-10-11 02:38:42,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:38:42,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:38:42,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:38:42,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:38:42,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:38:42,467 INFO L87 Difference]: Start difference. First operand 589 states and 983 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 02:38:48,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:38:48,872 INFO L93 Difference]: Finished difference Result 1438 states and 2478 transitions. [2024-10-11 02:38:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 02:38:48,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (10), 4 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 57 [2024-10-11 02:38:48,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:38:48,881 INFO L225 Difference]: With dead ends: 1438 [2024-10-11 02:38:48,881 INFO L226 Difference]: Without dead ends: 859 [2024-10-11 02:38:48,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 02:38:48,886 INFO L432 NwaCegarLoop]: 367 mSDtfsCounter, 1497 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 5189 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 5611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 5189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:38:48,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 2141 Invalid, 5611 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [422 Valid, 5189 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-10-11 02:38:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-10-11 02:38:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 589. [2024-10-11 02:38:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 452 states have (on average 1.6924778761061947) internal successors, (765), 472 states have internal predecessors, (765), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2024-10-11 02:38:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 982 transitions. [2024-10-11 02:38:49,000 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 982 transitions. Word has length 57 [2024-10-11 02:38:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:38:49,001 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 982 transitions. [2024-10-11 02:38:49,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 02:38:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 982 transitions. [2024-10-11 02:38:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-11 02:38:49,003 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:38:49,004 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:38:49,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 02:38:49,005 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:38:49,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:38:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1726938511, now seen corresponding path program 1 times [2024-10-11 02:38:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:38:49,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700219615] [2024-10-11 02:38:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:38:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:38:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:38:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:38:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-11 02:38:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-11 02:38:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 02:38:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-11 02:38:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:38:49,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:38:49,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700219615] [2024-10-11 02:38:49,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700219615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:38:49,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:38:49,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:38:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188986562] [2024-10-11 02:38:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:38:49,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:38:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:38:49,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:38:49,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:38:49,505 INFO L87 Difference]: Start difference. First operand 589 states and 982 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-11 02:38:54,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:38:54,204 INFO L93 Difference]: Finished difference Result 1432 states and 2461 transitions. [2024-10-11 02:38:54,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 02:38:54,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 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 57 [2024-10-11 02:38:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:38:54,212 INFO L225 Difference]: With dead ends: 1432 [2024-10-11 02:38:54,217 INFO L226 Difference]: Without dead ends: 824 [2024-10-11 02:38:54,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:38:54,223 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 1445 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2734 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-10-11 02:38:54,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 1186 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2734 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-10-11 02:38:54,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-10-11 02:38:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 566. [2024-10-11 02:38:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.6828703703703705) internal successors, (727), 450 states have internal predecessors, (727), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:38:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 940 transitions. [2024-10-11 02:38:54,324 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 940 transitions. Word has length 57 [2024-10-11 02:38:54,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:38:54,328 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 940 transitions. [2024-10-11 02:38:54,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-11 02:38:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 940 transitions. [2024-10-11 02:38:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-11 02:38:54,329 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:38:54,330 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:38:54,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 02:38:54,330 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:38:54,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:38:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -931169571, now seen corresponding path program 1 times [2024-10-11 02:38:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:38:54,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316940617] [2024-10-11 02:38:54,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:38:54,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:38:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:54,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:38:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:54,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:54,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:38:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:54,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:38:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:54,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:38:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:55,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-11 02:38:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:55,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 02:38:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:55,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-11 02:38:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:38:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:38:55,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:38:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316940617] [2024-10-11 02:38:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316940617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:38:55,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:38:55,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 02:38:55,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41524640] [2024-10-11 02:38:55,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:38:55,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:38:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:38:55,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:38:55,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:38:55,021 INFO L87 Difference]: Start difference. First operand 566 states and 940 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-10-11 02:39:00,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:00,732 INFO L93 Difference]: Finished difference Result 1396 states and 2393 transitions. [2024-10-11 02:39:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 02:39:00,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 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 58 [2024-10-11 02:39:00,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:00,739 INFO L225 Difference]: With dead ends: 1396 [2024-10-11 02:39:00,740 INFO L226 Difference]: Without dead ends: 818 [2024-10-11 02:39:00,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 02:39:00,747 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 875 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 5110 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 5315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 5110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:00,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 2134 Invalid, 5315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 5110 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-10-11 02:39:00,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-11 02:39:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 560. [2024-10-11 02:39:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 426 states have (on average 1.676056338028169) internal successors, (714), 444 states have internal predecessors, (714), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 927 transitions. [2024-10-11 02:39:00,848 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 927 transitions. Word has length 58 [2024-10-11 02:39:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:00,849 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 927 transitions. [2024-10-11 02:39:00,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-10-11 02:39:00,849 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 927 transitions. [2024-10-11 02:39:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-11 02:39:00,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:00,851 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:00,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 02:39:00,851 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:00,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2118257271, now seen corresponding path program 1 times [2024-10-11 02:39:00,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:00,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449434285] [2024-10-11 02:39:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:00,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-11 02:39:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:39:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-11 02:39:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:01,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449434285] [2024-10-11 02:39:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449434285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:01,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:01,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:39:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641598502] [2024-10-11 02:39:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:01,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:39:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:39:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:39:01,446 INFO L87 Difference]: Start difference. First operand 560 states and 927 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-10-11 02:39:05,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:05,646 INFO L93 Difference]: Finished difference Result 1368 states and 2344 transitions. [2024-10-11 02:39:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 02:39:05,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 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 59 [2024-10-11 02:39:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:05,653 INFO L225 Difference]: With dead ends: 1368 [2024-10-11 02:39:05,653 INFO L226 Difference]: Without dead ends: 818 [2024-10-11 02:39:05,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:39:05,657 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 836 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:05,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1169 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-10-11 02:39:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-10-11 02:39:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 560. [2024-10-11 02:39:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 426 states have (on average 1.6737089201877935) internal successors, (713), 444 states have internal predecessors, (713), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 926 transitions. [2024-10-11 02:39:05,764 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 926 transitions. Word has length 59 [2024-10-11 02:39:05,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:05,764 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 926 transitions. [2024-10-11 02:39:05,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 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) [2024-10-11 02:39:05,765 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 926 transitions. [2024-10-11 02:39:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-11 02:39:05,766 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:05,766 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:05,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 02:39:05,766 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:05,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2125465632, now seen corresponding path program 1 times [2024-10-11 02:39:05,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:05,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030679140] [2024-10-11 02:39:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-11 02:39:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 02:39:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-11 02:39:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:06,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:06,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030679140] [2024-10-11 02:39:06,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030679140] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:06,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:06,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 02:39:06,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80667553] [2024-10-11 02:39:06,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:06,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:39:06,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:06,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:39:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:39:06,330 INFO L87 Difference]: Start difference. First operand 560 states and 926 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 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) [2024-10-11 02:39:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:11,808 INFO L93 Difference]: Finished difference Result 1384 states and 2362 transitions. [2024-10-11 02:39:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 02:39:11,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 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 60 [2024-10-11 02:39:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:11,815 INFO L225 Difference]: With dead ends: 1384 [2024-10-11 02:39:11,815 INFO L226 Difference]: Without dead ends: 812 [2024-10-11 02:39:11,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 02:39:11,818 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 852 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 5056 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 5259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 5056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:11,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2156 Invalid, 5259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 5056 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-10-11 02:39:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-11 02:39:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 554. [2024-10-11 02:39:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 420 states have (on average 1.6666666666666667) internal successors, (700), 438 states have internal predecessors, (700), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 913 transitions. [2024-10-11 02:39:11,914 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 913 transitions. Word has length 60 [2024-10-11 02:39:11,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:11,915 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 913 transitions. [2024-10-11 02:39:11,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 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) [2024-10-11 02:39:11,915 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 913 transitions. [2024-10-11 02:39:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 02:39:11,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:11,917 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:11,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 02:39:11,917 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:11,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2142564522, now seen corresponding path program 1 times [2024-10-11 02:39:11,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:11,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658219512] [2024-10-11 02:39:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:11,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-11 02:39:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-11 02:39:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-11 02:39:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:12,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:12,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658219512] [2024-10-11 02:39:12,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658219512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:12,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:12,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:39:12,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237152909] [2024-10-11 02:39:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:12,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:39:12,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:39:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:39:12,459 INFO L87 Difference]: Start difference. First operand 554 states and 913 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-10-11 02:39:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:16,650 INFO L93 Difference]: Finished difference Result 1356 states and 2315 transitions. [2024-10-11 02:39:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 02:39:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 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 61 [2024-10-11 02:39:16,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:16,656 INFO L225 Difference]: With dead ends: 1356 [2024-10-11 02:39:16,656 INFO L226 Difference]: Without dead ends: 812 [2024-10-11 02:39:16,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:39:16,659 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 814 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 2654 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:16,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1169 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2654 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-11 02:39:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-11 02:39:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 554. [2024-10-11 02:39:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 420 states have (on average 1.6642857142857144) internal successors, (699), 438 states have internal predecessors, (699), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 912 transitions. [2024-10-11 02:39:16,756 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 912 transitions. Word has length 61 [2024-10-11 02:39:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:16,756 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 912 transitions. [2024-10-11 02:39:16,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-10-11 02:39:16,756 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 912 transitions. [2024-10-11 02:39:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 02:39:16,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:16,757 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:16,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 02:39:16,758 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:16,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:16,758 INFO L85 PathProgramCache]: Analyzing trace with hash -234462340, now seen corresponding path program 1 times [2024-10-11 02:39:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:16,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060403301] [2024-10-11 02:39:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 02:39:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 02:39:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 02:39:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:17,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:17,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060403301] [2024-10-11 02:39:17,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060403301] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:17,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:17,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 02:39:17,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823676626] [2024-10-11 02:39:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:17,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:39:17,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:39:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:39:17,296 INFO L87 Difference]: Start difference. First operand 554 states and 912 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-10-11 02:39:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:22,407 INFO L93 Difference]: Finished difference Result 1372 states and 2331 transitions. [2024-10-11 02:39:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 02:39:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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 62 [2024-10-11 02:39:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:22,414 INFO L225 Difference]: With dead ends: 1372 [2024-10-11 02:39:22,415 INFO L226 Difference]: Without dead ends: 806 [2024-10-11 02:39:22,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 02:39:22,418 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 1405 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 4833 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 5251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:22,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2187 Invalid, 5251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4833 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-10-11 02:39:22,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-10-11 02:39:22,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 548. [2024-10-11 02:39:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 414 states have (on average 1.6570048309178744) internal successors, (686), 432 states have internal predecessors, (686), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 899 transitions. [2024-10-11 02:39:22,525 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 899 transitions. Word has length 62 [2024-10-11 02:39:22,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:22,526 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 899 transitions. [2024-10-11 02:39:22,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 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) [2024-10-11 02:39:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 899 transitions. [2024-10-11 02:39:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 02:39:22,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:22,527 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:22,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 02:39:22,528 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:22,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash -14536963, now seen corresponding path program 1 times [2024-10-11 02:39:22,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:22,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126383415] [2024-10-11 02:39:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:22,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:22,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:22,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:22,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:23,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:23,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:23,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-11 02:39:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:23,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-11 02:39:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:23,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-11 02:39:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126383415] [2024-10-11 02:39:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126383415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:23,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 02:39:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674233844] [2024-10-11 02:39:23,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:39:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:39:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:39:23,077 INFO L87 Difference]: Start difference. First operand 548 states and 899 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 02:39:28,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:28,216 INFO L93 Difference]: Finished difference Result 1344 states and 2286 transitions. [2024-10-11 02:39:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 02:39:28,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 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 62 [2024-10-11 02:39:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:28,221 INFO L225 Difference]: With dead ends: 1344 [2024-10-11 02:39:28,221 INFO L226 Difference]: Without dead ends: 806 [2024-10-11 02:39:28,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-11 02:39:28,223 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 795 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 4864 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 5061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 4864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:28,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 2155 Invalid, 5061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 4864 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-10-11 02:39:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-10-11 02:39:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 548. [2024-10-11 02:39:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 414 states have (on average 1.6545893719806763) internal successors, (685), 432 states have internal predecessors, (685), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 898 transitions. [2024-10-11 02:39:28,322 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 898 transitions. Word has length 62 [2024-10-11 02:39:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:28,323 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 898 transitions. [2024-10-11 02:39:28,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-11 02:39:28,323 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 898 transitions. [2024-10-11 02:39:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 02:39:28,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:28,324 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:28,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 02:39:28,325 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:28,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2142375248, now seen corresponding path program 1 times [2024-10-11 02:39:28,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:28,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867752989] [2024-10-11 02:39:28,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:28,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:39:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-11 02:39:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 02:39:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:28,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:28,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867752989] [2024-10-11 02:39:28,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867752989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:28,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:28,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 02:39:28,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958186539] [2024-10-11 02:39:28,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:28,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 02:39:28,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:28,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 02:39:28,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 02:39:28,839 INFO L87 Difference]: Start difference. First operand 548 states and 898 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-10-11 02:39:32,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:32,792 INFO L93 Difference]: Finished difference Result 1350 states and 2290 transitions. [2024-10-11 02:39:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 02:39:32,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 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 63 [2024-10-11 02:39:32,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:32,797 INFO L225 Difference]: With dead ends: 1350 [2024-10-11 02:39:32,797 INFO L226 Difference]: Without dead ends: 812 [2024-10-11 02:39:32,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:39:32,799 INFO L432 NwaCegarLoop]: 362 mSDtfsCounter, 785 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:32,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 1185 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-11 02:39:32,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-11 02:39:32,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 554. [2024-10-11 02:39:32,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 420 states have (on average 1.6452380952380952) internal successors, (691), 438 states have internal predecessors, (691), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 904 transitions. [2024-10-11 02:39:32,899 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 904 transitions. Word has length 63 [2024-10-11 02:39:32,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:32,899 INFO L471 AbstractCegarLoop]: Abstraction has 554 states and 904 transitions. [2024-10-11 02:39:32,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-10-11 02:39:32,900 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 904 transitions. [2024-10-11 02:39:32,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 02:39:32,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:32,901 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:32,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 02:39:32,901 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:32,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash -101608050, now seen corresponding path program 1 times [2024-10-11 02:39:32,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208092101] [2024-10-11 02:39:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 02:39:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-11 02:39:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-11 02:39:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:33,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:33,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208092101] [2024-10-11 02:39:33,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208092101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-11 02:39:33,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109558325] [2024-10-11 02:39:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:33,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 02:39:33,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 02:39:33,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:39:33,477 INFO L87 Difference]: Start difference. First operand 554 states and 904 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-10-11 02:39:38,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:38,674 INFO L93 Difference]: Finished difference Result 1358 states and 2296 transitions. [2024-10-11 02:39:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 02:39:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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 63 [2024-10-11 02:39:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:38,681 INFO L225 Difference]: With dead ends: 1358 [2024-10-11 02:39:38,681 INFO L226 Difference]: Without dead ends: 806 [2024-10-11 02:39:38,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-10-11 02:39:38,684 INFO L432 NwaCegarLoop]: 356 mSDtfsCounter, 1386 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 4679 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 4679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:38,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 2091 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 4679 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-10-11 02:39:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-10-11 02:39:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 548. [2024-10-11 02:39:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 414 states have (on average 1.6521739130434783) internal successors, (684), 432 states have internal predecessors, (684), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2024-10-11 02:39:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 897 transitions. [2024-10-11 02:39:38,804 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 897 transitions. Word has length 63 [2024-10-11 02:39:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:38,804 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 897 transitions. [2024-10-11 02:39:38,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-10-11 02:39:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 897 transitions. [2024-10-11 02:39:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 02:39:38,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:38,806 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:38,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 02:39:38,806 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:38,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:38,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1889962793, now seen corresponding path program 1 times [2024-10-11 02:39:38,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:38,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298017664] [2024-10-11 02:39:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:38,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 02:39:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-11 02:39:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-11 02:39:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 02:39:39,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:39,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298017664] [2024-10-11 02:39:39,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298017664] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:39,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 02:39:39,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 02:39:39,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463228449] [2024-10-11 02:39:39,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:39,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 02:39:39,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:39,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 02:39:39,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 02:39:39,366 INFO L87 Difference]: Start difference. First operand 548 states and 897 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 02:39:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:47,060 INFO L93 Difference]: Finished difference Result 2081 states and 3580 transitions. [2024-10-11 02:39:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 02:39:47,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2024-10-11 02:39:47,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:47,075 INFO L225 Difference]: With dead ends: 2081 [2024-10-11 02:39:47,076 INFO L226 Difference]: Without dead ends: 1545 [2024-10-11 02:39:47,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-11 02:39:47,079 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 2130 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 4619 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 5272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 4619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:47,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1783 Invalid, 5272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 4619 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-10-11 02:39:47,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2024-10-11 02:39:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1191. [2024-10-11 02:39:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 863 states have (on average 1.600231749710313) internal successors, (1381), 917 states have internal predecessors, (1381), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (351), 265 states have call predecessors, (351), 269 states have call successors, (351) [2024-10-11 02:39:47,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 2005 transitions. [2024-10-11 02:39:47,351 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 2005 transitions. Word has length 64 [2024-10-11 02:39:47,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 02:39:47,352 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 2005 transitions. [2024-10-11 02:39:47,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 5 states have internal predecessors, (45), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-11 02:39:47,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 2005 transitions. [2024-10-11 02:39:47,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 02:39:47,353 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 02:39:47,353 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 02:39:47,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 02:39:47,354 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 02:39:47,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 02:39:47,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1150589399, now seen corresponding path program 1 times [2024-10-11 02:39:47,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 02:39:47,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268630108] [2024-10-11 02:39:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:47,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 02:39:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 02:39:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-11 02:39:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 02:39:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 02:39:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-11 02:39:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-11 02:39:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-11 02:39:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 02:39:47,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 02:39:47,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268630108] [2024-10-11 02:39:47,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268630108] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 02:39:47,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656805796] [2024-10-11 02:39:47,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 02:39:47,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 02:39:47,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 02:39:47,895 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 02:39:47,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 02:39:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 02:39:48,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 02:39:48,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 02:39:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 02:39:48,231 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 02:39:48,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656805796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 02:39:48,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 02:39:48,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-10-11 02:39:48,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626870504] [2024-10-11 02:39:48,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 02:39:48,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 02:39:48,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 02:39:48,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 02:39:48,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:39:48,232 INFO L87 Difference]: Start difference. First operand 1191 states and 2005 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-10-11 02:39:48,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 02:39:48,712 INFO L93 Difference]: Finished difference Result 3457 states and 5905 transitions. [2024-10-11 02:39:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 02:39:48,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 64 [2024-10-11 02:39:48,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 02:39:48,731 INFO L225 Difference]: With dead ends: 3457 [2024-10-11 02:39:48,732 INFO L226 Difference]: Without dead ends: 2278 [2024-10-11 02:39:48,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-11 02:39:48,739 INFO L432 NwaCegarLoop]: 941 mSDtfsCounter, 862 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 02:39:48,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1726 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 02:39:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states.