./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 c7caf1796ba4b07248be26f00733894517b89591cbeb4bf07d682989c7001a35 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:44:44,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:44:44,830 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:44:44,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:44:44,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:44:44,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:44:44,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:44:44,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:44:44,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:44:44,858 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:44:44,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:44:44,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:44:44,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:44:44,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:44:44,860 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:44:44,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:44:44,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:44:44,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:44:44,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:44:44,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:44:44,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:44:44,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:44:44,864 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:44:44,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:44:44,865 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:44:44,865 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:44:44,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:44:44,868 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:44:44,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:44:44,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:44:44,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:44:44,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:44:44,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:44:44,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:44:44,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:44:44,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:44:44,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:44:44,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:44:44,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:44:44,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:44:44,870 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:44:44,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:44:44,871 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7caf1796ba4b07248be26f00733894517b89591cbeb4bf07d682989c7001a35 [2024-11-22 01:44:45,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:44:45,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:44:45,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:44:45,125 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:44:45,126 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:44:45,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c [2024-11-22 01:44:46,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:44:46,891 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:44:46,892 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product29.cil.c [2024-11-22 01:44:46,922 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55104ef17/d5c8dc7247e44c9c86ead203318aac7c/FLAGa5c57dc7c [2024-11-22 01:44:46,938 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55104ef17/d5c8dc7247e44c9c86ead203318aac7c [2024-11-22 01:44:46,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:44:46,942 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:44:46,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:44:46,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:44:46,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:44:46,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:46" (1/1) ... [2024-11-22 01:44:46,952 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69197aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:46, skipping insertion in model container [2024-11-22 01:44:46,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:44:46" (1/1) ... [2024-11-22 01:44:47,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:44:47,211 WARN L250 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_spec1_product29.cil.c[4117,4130] [2024-11-22 01:44:47,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:44:47,499 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:44:47,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-11-22 01:44:47,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [169] [2024-11-22 01:44:47,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [178] [2024-11-22 01:44:47,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [363] [2024-11-22 01:44:47,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1035] [2024-11-22 01:44:47,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1395] [2024-11-22 01:44:47,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1430] [2024-11-22 01:44:47,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1522] [2024-11-22 01:44:47,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3050] [2024-11-22 01:44:47,509 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3416] [2024-11-22 01:44:47,514 WARN L250 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_spec1_product29.cil.c[4117,4130] [2024-11-22 01:44:47,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:44:47,600 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:44:47,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47 WrapperNode [2024-11-22 01:44:47,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:44:47,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:44:47,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:44:47,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:44:47,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,656 INFO L138 Inliner]: procedures = 93, calls = 342, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 893 [2024-11-22 01:44:47,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:44:47,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:44:47,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:44:47,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:44:47,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,671 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,689 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]. [2024-11-22 01:44:47,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,718 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:44:47,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:44:47,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:44:47,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:44:47,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (1/1) ... [2024-11-22 01:44:47,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:44:47,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:47,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 01:44:47,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 01:44:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-22 01:44:47,798 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-22 01:44:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:44:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-22 01:44:47,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-22 01:44:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-22 01:44:47,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-22 01:44:47,799 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-22 01:44:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-22 01:44:47,800 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-22 01:44:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-22 01:44:47,800 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-22 01:44:47,800 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-22 01:44:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-22 01:44:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-22 01:44:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-22 01:44:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-22 01:44:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-22 01:44:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-22 01:44:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-22 01:44:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-22 01:44:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-22 01:44:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-22 01:44:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-22 01:44:47,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-22 01:44:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-22 01:44:47,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-22 01:44:47,804 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-22 01:44:47,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-22 01:44:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-22 01:44:47,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-22 01:44:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-22 01:44:47,805 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-22 01:44:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-22 01:44:47,805 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-22 01:44:47,805 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-22 01:44:47,805 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-22 01:44:47,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-22 01:44:47,806 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 01:44:47,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-22 01:44:47,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-22 01:44:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-22 01:44:47,808 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-22 01:44:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-22 01:44:47,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-22 01:44:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-22 01:44:47,808 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-22 01:44:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-22 01:44:47,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-22 01:44:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:44:47,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:44:47,808 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-22 01:44:47,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-22 01:44:48,012 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:44:48,015 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:44:49,130 INFO L? ?]: Removed 460 outVars from TransFormulas that were not future-live. [2024-11-22 01:44:49,131 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:44:49,149 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:44:49,149 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:44:49,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:49 BoogieIcfgContainer [2024-11-22 01:44:49,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:44:49,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:44:49,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:44:49,154 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:44:49,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:44:46" (1/3) ... [2024-11-22 01:44:49,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7f90e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:49, skipping insertion in model container [2024-11-22 01:44:49,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:44:47" (2/3) ... [2024-11-22 01:44:49,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7f90e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:44:49, skipping insertion in model container [2024-11-22 01:44:49,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:44:49" (3/3) ... [2024-11-22 01:44:49,156 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product29.cil.c [2024-11-22 01:44:49,175 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:44:49,178 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:44:49,244 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:44:49,252 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;@79c03947, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:44:49,252 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:44:49,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 454 states have (on average 1.6916299559471366) internal successors, (768), 475 states have internal predecessors, (768), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-22 01:44:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 01:44:49,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:49,297 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:49,298 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:49,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:49,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1983373863, now seen corresponding path program 1 times [2024-11-22 01:44:49,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:49,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685462576] [2024-11-22 01:44:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:49,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:44:49,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685462576] [2024-11-22 01:44:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685462576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266237161] [2024-11-22 01:44:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:49,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:49,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:49,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:49,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:44:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:50,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 01:44:50,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 01:44:50,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:50,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266237161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:50,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:50,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-22 01:44:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800077122] [2024-11-22 01:44:50,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:50,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:44:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:44:50,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:44:50,135 INFO L87 Difference]: Start difference. First operand has 579 states, 454 states have (on average 1.6916299559471366) internal successors, (768), 475 states have internal predecessors, (768), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 01:44:50,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:50,187 INFO L93 Difference]: Finished difference Result 600 states and 994 transitions. [2024-11-22 01:44:50,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:44:50,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2024-11-22 01:44:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:50,205 INFO L225 Difference]: With dead ends: 600 [2024-11-22 01:44:50,205 INFO L226 Difference]: Without dead ends: 571 [2024-11-22 01:44:50,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:44:50,210 INFO L432 NwaCegarLoop]: 955 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:50,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:50,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-22 01:44:50,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2024-11-22 01:44:50,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 448 states have (on average 1.6897321428571428) internal successors, (757), 467 states have internal predecessors, (757), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:44:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 948 transitions. [2024-11-22 01:44:50,275 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 948 transitions. Word has length 111 [2024-11-22 01:44:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:50,277 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 948 transitions. [2024-11-22 01:44:50,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2024-11-22 01:44:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 948 transitions. [2024-11-22 01:44:50,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-22 01:44:50,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:50,283 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:50,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:44:50,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 01:44:50,484 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:50,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2050586346, now seen corresponding path program 1 times [2024-11-22 01:44:50,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:50,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801852311] [2024-11-22 01:44:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:50,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:44:50,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801852311] [2024-11-22 01:44:50,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801852311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018044131] [2024-11-22 01:44:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:50,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:50,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:50,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:50,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:44:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:51,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:51,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:44:51,080 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018044131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:51,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:51,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867349916] [2024-11-22 01:44:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:51,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:51,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:51,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:51,085 INFO L87 Difference]: Start difference. First operand 571 states and 948 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:51,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:51,152 INFO L93 Difference]: Finished difference Result 1133 states and 1888 transitions. [2024-11-22 01:44:51,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:51,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2024-11-22 01:44:51,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:51,156 INFO L225 Difference]: With dead ends: 1133 [2024-11-22 01:44:51,157 INFO L226 Difference]: Without dead ends: 571 [2024-11-22 01:44:51,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:51,162 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 5 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:51,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2802 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-22 01:44:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2024-11-22 01:44:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 448 states have (on average 1.6875) internal successors, (756), 467 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:44:51,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 947 transitions. [2024-11-22 01:44:51,204 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 947 transitions. Word has length 113 [2024-11-22 01:44:51,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:51,205 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 947 transitions. [2024-11-22 01:44:51,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:51,206 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 947 transitions. [2024-11-22 01:44:51,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-22 01:44:51,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:51,210 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:51,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 01:44:51,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-22 01:44:51,414 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:51,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash 229491886, now seen corresponding path program 1 times [2024-11-22 01:44:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003338558] [2024-11-22 01:44:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:44:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003338558] [2024-11-22 01:44:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003338558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472928894] [2024-11-22 01:44:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:51,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:51,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:44:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:51,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:51,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:44:51,997 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:51,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472928894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:51,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:51,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980402380] [2024-11-22 01:44:51,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:51,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:51,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:52,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:52,000 INFO L87 Difference]: Start difference. First operand 571 states and 947 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:52,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:52,072 INFO L93 Difference]: Finished difference Result 1133 states and 1886 transitions. [2024-11-22 01:44:52,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:52,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2024-11-22 01:44:52,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:52,076 INFO L225 Difference]: With dead ends: 1133 [2024-11-22 01:44:52,076 INFO L226 Difference]: Without dead ends: 571 [2024-11-22 01:44:52,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:52,078 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 4 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:52,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2802 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-22 01:44:52,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2024-11-22 01:44:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 448 states have (on average 1.6852678571428572) internal successors, (755), 467 states have internal predecessors, (755), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:44:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 946 transitions. [2024-11-22 01:44:52,099 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 946 transitions. Word has length 115 [2024-11-22 01:44:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:52,100 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 946 transitions. [2024-11-22 01:44:52,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 946 transitions. [2024-11-22 01:44:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-22 01:44:52,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:52,106 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:52,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:44:52,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:52,306 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:52,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash 808115478, now seen corresponding path program 1 times [2024-11-22 01:44:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505770865] [2024-11-22 01:44:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:44:52,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505770865] [2024-11-22 01:44:52,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505770865] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:52,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662737571] [2024-11-22 01:44:52,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:52,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:52,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:52,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:52,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:44:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:52,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:52,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:44:52,736 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:52,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662737571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:52,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:52,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:52,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341509751] [2024-11-22 01:44:52,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:52,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:52,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:52,738 INFO L87 Difference]: Start difference. First operand 571 states and 946 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:52,798 INFO L93 Difference]: Finished difference Result 1140 states and 1893 transitions. [2024-11-22 01:44:52,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:52,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2024-11-22 01:44:52,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:52,802 INFO L225 Difference]: With dead ends: 1140 [2024-11-22 01:44:52,802 INFO L226 Difference]: Without dead ends: 580 [2024-11-22 01:44:52,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:52,807 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 13 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:52,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2799 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-22 01:44:52,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2024-11-22 01:44:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 456 states have (on average 1.6820175438596492) internal successors, (767), 475 states have internal predecessors, (767), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:44:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 958 transitions. [2024-11-22 01:44:52,831 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 958 transitions. Word has length 117 [2024-11-22 01:44:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:52,831 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 958 transitions. [2024-11-22 01:44:52,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 958 transitions. [2024-11-22 01:44:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 01:44:52,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:52,834 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:52,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:44:53,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:53,035 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:53,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:53,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1483857368, now seen corresponding path program 1 times [2024-11-22 01:44:53,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:53,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757712489] [2024-11-22 01:44:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:53,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:44:53,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757712489] [2024-11-22 01:44:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757712489] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:53,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315293543] [2024-11-22 01:44:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:53,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:53,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:53,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:53,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:44:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:53,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:53,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:44:53,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:53,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315293543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:53,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:53,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:53,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350076650] [2024-11-22 01:44:53,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:53,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:53,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:53,512 INFO L87 Difference]: Start difference. First operand 580 states and 958 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:53,566 INFO L93 Difference]: Finished difference Result 1142 states and 1894 transitions. [2024-11-22 01:44:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:53,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2024-11-22 01:44:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:53,570 INFO L225 Difference]: With dead ends: 1142 [2024-11-22 01:44:53,570 INFO L226 Difference]: Without dead ends: 580 [2024-11-22 01:44:53,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:53,572 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 11 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:53,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2799 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-22 01:44:53,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2024-11-22 01:44:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 456 states have (on average 1.6798245614035088) internal successors, (766), 475 states have internal predecessors, (766), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:44:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 957 transitions. [2024-11-22 01:44:53,588 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 957 transitions. Word has length 118 [2024-11-22 01:44:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:53,588 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 957 transitions. [2024-11-22 01:44:53,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 957 transitions. [2024-11-22 01:44:53,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-22 01:44:53,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:53,591 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:53,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:44:53,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:53,792 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:53,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:53,792 INFO L85 PathProgramCache]: Analyzing trace with hash 707607642, now seen corresponding path program 1 times [2024-11-22 01:44:53,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:53,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273402714] [2024-11-22 01:44:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:53,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:44:53,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273402714] [2024-11-22 01:44:53,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273402714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:53,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989822219] [2024-11-22 01:44:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:53,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:53,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:53,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:53,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 01:44:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:54,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:54,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:44:54,256 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:54,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989822219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:54,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:54,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808934355] [2024-11-22 01:44:54,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:54,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:54,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:54,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:54,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:54,259 INFO L87 Difference]: Start difference. First operand 580 states and 957 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:54,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:54,316 INFO L93 Difference]: Finished difference Result 1142 states and 1893 transitions. [2024-11-22 01:44:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2024-11-22 01:44:54,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:54,320 INFO L225 Difference]: With dead ends: 1142 [2024-11-22 01:44:54,320 INFO L226 Difference]: Without dead ends: 580 [2024-11-22 01:44:54,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:54,322 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 10 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:54,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2799 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:54,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-22 01:44:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2024-11-22 01:44:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 456 states have (on average 1.6776315789473684) internal successors, (765), 475 states have internal predecessors, (765), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:44:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 956 transitions. [2024-11-22 01:44:54,342 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 956 transitions. Word has length 119 [2024-11-22 01:44:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:54,342 INFO L471 AbstractCegarLoop]: Abstraction has 580 states and 956 transitions. [2024-11-22 01:44:54,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 956 transitions. [2024-11-22 01:44:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 01:44:54,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:54,345 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:54,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 01:44:54,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:54,551 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:54,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:54,551 INFO L85 PathProgramCache]: Analyzing trace with hash 151725420, now seen corresponding path program 1 times [2024-11-22 01:44:54,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:54,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655534907] [2024-11-22 01:44:54,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:54,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:44:54,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655534907] [2024-11-22 01:44:54,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655534907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:54,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089171701] [2024-11-22 01:44:54,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:54,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:54,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:54,793 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:54,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 01:44:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:55,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:44:55,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:44:55,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089171701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:55,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:55,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-22 01:44:55,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414734067] [2024-11-22 01:44:55,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:55,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:44:55,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:44:55,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:44:55,157 INFO L87 Difference]: Start difference. First operand 580 states and 956 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:44:55,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:55,238 INFO L93 Difference]: Finished difference Result 1161 states and 1923 transitions. [2024-11-22 01:44:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:44:55,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 120 [2024-11-22 01:44:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:55,243 INFO L225 Difference]: With dead ends: 1161 [2024-11-22 01:44:55,243 INFO L226 Difference]: Without dead ends: 603 [2024-11-22 01:44:55,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:44:55,245 INFO L432 NwaCegarLoop]: 936 mSDtfsCounter, 100 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:55,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5530 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:44:55,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2024-11-22 01:44:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 599. [2024-11-22 01:44:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 472 states have (on average 1.6758474576271187) internal successors, (791), 493 states have internal predecessors, (791), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2024-11-22 01:44:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 987 transitions. [2024-11-22 01:44:55,264 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 987 transitions. Word has length 120 [2024-11-22 01:44:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:55,264 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 987 transitions. [2024-11-22 01:44:55,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:44:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 987 transitions. [2024-11-22 01:44:55,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-22 01:44:55,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:55,266 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:55,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:55,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:55,467 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:55,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1282512045, now seen corresponding path program 1 times [2024-11-22 01:44:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:55,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490648069] [2024-11-22 01:44:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:44:55,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:55,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490648069] [2024-11-22 01:44:55,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490648069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:55,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80553517] [2024-11-22 01:44:55,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:55,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:55,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:55,551 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:55,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 01:44:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:55,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:55,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:55,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:44:55,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:55,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80553517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:55,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:55,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:55,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769893224] [2024-11-22 01:44:55,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:55,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:55,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:55,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:55,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:55,850 INFO L87 Difference]: Start difference. First operand 599 states and 987 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:55,957 INFO L93 Difference]: Finished difference Result 1217 states and 2024 transitions. [2024-11-22 01:44:55,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:55,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2024-11-22 01:44:55,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:55,963 INFO L225 Difference]: With dead ends: 1217 [2024-11-22 01:44:55,964 INFO L226 Difference]: Without dead ends: 614 [2024-11-22 01:44:55,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:55,966 INFO L432 NwaCegarLoop]: 910 mSDtfsCounter, 76 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:55,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2690 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:55,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-22 01:44:55,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 599. [2024-11-22 01:44:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 472 states have (on average 1.6652542372881356) internal successors, (786), 493 states have internal predecessors, (786), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2024-11-22 01:44:55,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 982 transitions. [2024-11-22 01:44:55,983 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 982 transitions. Word has length 120 [2024-11-22 01:44:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:55,983 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 982 transitions. [2024-11-22 01:44:55,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 982 transitions. [2024-11-22 01:44:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-22 01:44:55,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:55,986 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:55,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:56,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-22 01:44:56,187 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:56,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:56,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1441953085, now seen corresponding path program 1 times [2024-11-22 01:44:56,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:56,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082755817] [2024-11-22 01:44:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:56,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:44:56,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082755817] [2024-11-22 01:44:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082755817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:56,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475002596] [2024-11-22 01:44:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:56,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:56,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:56,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:56,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 01:44:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:56,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:56,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:44:56,591 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:56,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475002596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:56,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:56,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:56,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845250831] [2024-11-22 01:44:56,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:56,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:56,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:56,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:56,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:56,593 INFO L87 Difference]: Start difference. First operand 599 states and 982 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:56,694 INFO L93 Difference]: Finished difference Result 1217 states and 2014 transitions. [2024-11-22 01:44:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:44:56,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2024-11-22 01:44:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:56,698 INFO L225 Difference]: With dead ends: 1217 [2024-11-22 01:44:56,698 INFO L226 Difference]: Without dead ends: 614 [2024-11-22 01:44:56,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:56,701 INFO L432 NwaCegarLoop]: 910 mSDtfsCounter, 75 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:56,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2690 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-22 01:44:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 599. [2024-11-22 01:44:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 472 states have (on average 1.6546610169491525) internal successors, (781), 493 states have internal predecessors, (781), 99 states have call successors, (99), 26 states have call predecessors, (99), 27 states have return successors, (97), 92 states have call predecessors, (97), 94 states have call successors, (97) [2024-11-22 01:44:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 977 transitions. [2024-11-22 01:44:56,718 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 977 transitions. Word has length 122 [2024-11-22 01:44:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:56,719 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 977 transitions. [2024-11-22 01:44:56,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 977 transitions. [2024-11-22 01:44:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-22 01:44:56,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:56,722 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:56,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 01:44:56,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:56,923 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:56,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1684119539, now seen corresponding path program 1 times [2024-11-22 01:44:56,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:56,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804793097] [2024-11-22 01:44:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:56,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:44:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804793097] [2024-11-22 01:44:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804793097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296622159] [2024-11-22 01:44:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:57,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:57,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:57,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 01:44:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:57,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:57,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:44:57,333 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:57,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296622159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:57,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:57,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893129596] [2024-11-22 01:44:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:57,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:57,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:57,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:57,335 INFO L87 Difference]: Start difference. First operand 599 states and 977 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:57,468 INFO L93 Difference]: Finished difference Result 1268 states and 2086 transitions. [2024-11-22 01:44:57,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:57,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2024-11-22 01:44:57,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:57,472 INFO L225 Difference]: With dead ends: 1268 [2024-11-22 01:44:57,472 INFO L226 Difference]: Without dead ends: 695 [2024-11-22 01:44:57,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:57,474 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 130 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:57,474 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2721 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-11-22 01:44:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 650. [2024-11-22 01:44:57,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 522 states have (on average 1.6590038314176245) internal successors, (866), 543 states have internal predecessors, (866), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-11-22 01:44:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1061 transitions. [2024-11-22 01:44:57,490 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1061 transitions. Word has length 124 [2024-11-22 01:44:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:57,490 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1061 transitions. [2024-11-22 01:44:57,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1061 transitions. [2024-11-22 01:44:57,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 01:44:57,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:57,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:57,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 01:44:57,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 01:44:57,698 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:57,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:57,698 INFO L85 PathProgramCache]: Analyzing trace with hash -241041615, now seen corresponding path program 1 times [2024-11-22 01:44:57,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:57,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029220704] [2024-11-22 01:44:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:57,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:44:57,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029220704] [2024-11-22 01:44:57,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029220704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:57,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737859786] [2024-11-22 01:44:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:57,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:57,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:57,812 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:57,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 01:44:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:58,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:44:58,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:44:58,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:58,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737859786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:58,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:58,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-22 01:44:58,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512798885] [2024-11-22 01:44:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:58,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:44:58,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:44:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:44:58,194 INFO L87 Difference]: Start difference. First operand 650 states and 1061 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:44:58,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:58,303 INFO L93 Difference]: Finished difference Result 1230 states and 2015 transitions. [2024-11-22 01:44:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:44:58,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-22 01:44:58,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:58,308 INFO L225 Difference]: With dead ends: 1230 [2024-11-22 01:44:58,308 INFO L226 Difference]: Without dead ends: 672 [2024-11-22 01:44:58,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:44:58,311 INFO L432 NwaCegarLoop]: 916 mSDtfsCounter, 113 mSDsluCounter, 5407 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6323 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:58,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6323 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-22 01:44:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 650. [2024-11-22 01:44:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 522 states have (on average 1.6590038314176245) internal successors, (866), 543 states have internal predecessors, (866), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-11-22 01:44:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1061 transitions. [2024-11-22 01:44:58,364 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1061 transitions. Word has length 125 [2024-11-22 01:44:58,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:58,365 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1061 transitions. [2024-11-22 01:44:58,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:44:58,366 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1061 transitions. [2024-11-22 01:44:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 01:44:58,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:58,369 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:58,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 01:44:58,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-22 01:44:58,569 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:58,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1302019153, now seen corresponding path program 1 times [2024-11-22 01:44:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:58,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133359279] [2024-11-22 01:44:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:58,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:44:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133359279] [2024-11-22 01:44:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133359279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308270306] [2024-11-22 01:44:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:58,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:58,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:58,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:58,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 01:44:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:58,936 INFO L255 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:44:58,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:44:58,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308270306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:58,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:58,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:44:58,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891781268] [2024-11-22 01:44:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:58,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:44:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:44:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:44:58,960 INFO L87 Difference]: Start difference. First operand 650 states and 1061 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:59,093 INFO L93 Difference]: Finished difference Result 1271 states and 2087 transitions. [2024-11-22 01:44:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:44:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2024-11-22 01:44:59,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:59,097 INFO L225 Difference]: With dead ends: 1271 [2024-11-22 01:44:59,097 INFO L226 Difference]: Without dead ends: 683 [2024-11-22 01:44:59,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:44:59,099 INFO L432 NwaCegarLoop]: 942 mSDtfsCounter, 124 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:59,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2694 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-22 01:44:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 650. [2024-11-22 01:44:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 522 states have (on average 1.6494252873563218) internal successors, (861), 543 states have internal predecessors, (861), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-11-22 01:44:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1056 transitions. [2024-11-22 01:44:59,113 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1056 transitions. Word has length 125 [2024-11-22 01:44:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:59,114 INFO L471 AbstractCegarLoop]: Abstraction has 650 states and 1056 transitions. [2024-11-22 01:44:59,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:44:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1056 transitions. [2024-11-22 01:44:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 01:44:59,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:59,116 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:59,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 01:44:59,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 01:44:59,317 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:44:59,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:44:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1227624304, now seen corresponding path program 1 times [2024-11-22 01:44:59,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:44:59,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218318787] [2024-11-22 01:44:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:59,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:44:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:44:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:44:59,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218318787] [2024-11-22 01:44:59,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218318787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:44:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207991008] [2024-11-22 01:44:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:44:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:44:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:44:59,389 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:44:59,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 01:44:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:44:59,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:44:59,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:44:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:44:59,700 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:44:59,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207991008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:44:59,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:44:59,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 01:44:59,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004785163] [2024-11-22 01:44:59,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:44:59,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:44:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:44:59,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:44:59,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:44:59,703 INFO L87 Difference]: Start difference. First operand 650 states and 1056 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:44:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:44:59,799 INFO L93 Difference]: Finished difference Result 1165 states and 1907 transitions. [2024-11-22 01:44:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:44:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2024-11-22 01:44:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:44:59,803 INFO L225 Difference]: With dead ends: 1165 [2024-11-22 01:44:59,803 INFO L226 Difference]: Without dead ends: 674 [2024-11-22 01:44:59,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:44:59,805 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 86 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5495 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:44:59,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5495 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:44:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-22 01:44:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 669. [2024-11-22 01:44:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 538 states have (on average 1.6486988847583643) internal successors, (887), 561 states have internal predecessors, (887), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:44:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1086 transitions. [2024-11-22 01:44:59,835 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1086 transitions. Word has length 125 [2024-11-22 01:44:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:44:59,835 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 1086 transitions. [2024-11-22 01:44:59,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:44:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1086 transitions. [2024-11-22 01:44:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-22 01:44:59,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:44:59,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:44:59,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 01:45:00,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 01:45:00,042 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:00,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:00,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1149423119, now seen corresponding path program 1 times [2024-11-22 01:45:00,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:00,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109023453] [2024-11-22 01:45:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:00,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:45:00,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109023453] [2024-11-22 01:45:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109023453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322569059] [2024-11-22 01:45:00,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:00,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:00,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:00,177 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:00,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 01:45:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:00,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:45:00,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:45:00,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322569059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:00,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:00,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 01:45:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523996717] [2024-11-22 01:45:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:00,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:45:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:45:00,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:45:00,670 INFO L87 Difference]: Start difference. First operand 669 states and 1086 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:45:00,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:00,750 INFO L93 Difference]: Finished difference Result 1195 states and 1958 transitions. [2024-11-22 01:45:00,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:00,750 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2024-11-22 01:45:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:00,754 INFO L225 Difference]: With dead ends: 1195 [2024-11-22 01:45:00,754 INFO L226 Difference]: Without dead ends: 704 [2024-11-22 01:45:00,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:00,757 INFO L432 NwaCegarLoop]: 929 mSDtfsCounter, 95 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5485 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:00,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5485 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:45:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-11-22 01:45:00,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 669. [2024-11-22 01:45:00,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 538 states have (on average 1.6486988847583643) internal successors, (887), 561 states have internal predecessors, (887), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1086 transitions. [2024-11-22 01:45:00,772 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1086 transitions. Word has length 126 [2024-11-22 01:45:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:00,773 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 1086 transitions. [2024-11-22 01:45:00,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:45:00,773 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1086 transitions. [2024-11-22 01:45:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-22 01:45:00,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:00,775 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:00,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-22 01:45:00,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:00,978 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:00,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:00,978 INFO L85 PathProgramCache]: Analyzing trace with hash 183126671, now seen corresponding path program 1 times [2024-11-22 01:45:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113565499] [2024-11-22 01:45:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 01:45:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113565499] [2024-11-22 01:45:01,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113565499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:01,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710866432] [2024-11-22 01:45:01,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:01,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:01,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:01,050 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:01,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 01:45:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:01,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:45:01,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:45:01,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710866432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-22 01:45:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789048867] [2024-11-22 01:45:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:01,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:45:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:01,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:45:01,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:01,433 INFO L87 Difference]: Start difference. First operand 669 states and 1086 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:45:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:01,547 INFO L93 Difference]: Finished difference Result 1180 states and 1932 transitions. [2024-11-22 01:45:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:45:01,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2024-11-22 01:45:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:01,551 INFO L225 Difference]: With dead ends: 1180 [2024-11-22 01:45:01,551 INFO L226 Difference]: Without dead ends: 689 [2024-11-22 01:45:01,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:45:01,553 INFO L432 NwaCegarLoop]: 918 mSDtfsCounter, 113 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6331 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:01,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6331 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:45:01,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-11-22 01:45:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 669. [2024-11-22 01:45:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 538 states have (on average 1.6486988847583643) internal successors, (887), 561 states have internal predecessors, (887), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1086 transitions. [2024-11-22 01:45:01,567 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1086 transitions. Word has length 126 [2024-11-22 01:45:01,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:01,567 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 1086 transitions. [2024-11-22 01:45:01,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:45:01,568 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1086 transitions. [2024-11-22 01:45:01,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-22 01:45:01,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:01,570 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:01,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 01:45:01,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 01:45:01,771 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:01,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:01,771 INFO L85 PathProgramCache]: Analyzing trace with hash 601705896, now seen corresponding path program 1 times [2024-11-22 01:45:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:01,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448209254] [2024-11-22 01:45:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:01,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:45:01,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448209254] [2024-11-22 01:45:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448209254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949351630] [2024-11-22 01:45:01,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:01,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:01,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:01,845 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:01,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 01:45:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:02,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:45:02,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:45:02,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:02,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949351630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:02,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:02,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:45:02,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431201966] [2024-11-22 01:45:02,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:02,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:45:02,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:45:02,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:02,133 INFO L87 Difference]: Start difference. First operand 669 states and 1086 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:45:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:02,170 INFO L93 Difference]: Finished difference Result 1232 states and 2017 transitions. [2024-11-22 01:45:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:02,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2024-11-22 01:45:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:02,174 INFO L225 Difference]: With dead ends: 1232 [2024-11-22 01:45:02,175 INFO L226 Difference]: Without dead ends: 669 [2024-11-22 01:45:02,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:02,177 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 13 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:02,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2768 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-22 01:45:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2024-11-22 01:45:02,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 538 states have (on average 1.641263940520446) internal successors, (883), 561 states have internal predecessors, (883), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:02,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1082 transitions. [2024-11-22 01:45:02,190 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1082 transitions. Word has length 126 [2024-11-22 01:45:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:02,190 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 1082 transitions. [2024-11-22 01:45:02,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:45:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1082 transitions. [2024-11-22 01:45:02,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-22 01:45:02,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:02,193 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:02,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 01:45:02,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 01:45:02,398 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:02,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:02,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1246575496, now seen corresponding path program 1 times [2024-11-22 01:45:02,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:02,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549997588] [2024-11-22 01:45:02,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:02,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 01:45:02,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:02,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549997588] [2024-11-22 01:45:02,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549997588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:02,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638617042] [2024-11-22 01:45:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:02,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:02,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:02,490 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:02,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 01:45:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:02,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:45:02,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:45:02,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638617042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:02,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:02,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-22 01:45:02,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52481696] [2024-11-22 01:45:02,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:02,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:45:02,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:02,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:45:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:02,816 INFO L87 Difference]: Start difference. First operand 669 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:45:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:02,864 INFO L93 Difference]: Finished difference Result 1276 states and 2085 transitions. [2024-11-22 01:45:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:45:02,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2024-11-22 01:45:02,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:02,868 INFO L225 Difference]: With dead ends: 1276 [2024-11-22 01:45:02,868 INFO L226 Difference]: Without dead ends: 693 [2024-11-22 01:45:02,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:02,870 INFO L432 NwaCegarLoop]: 918 mSDtfsCounter, 7 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:02,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2741 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:02,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-22 01:45:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2024-11-22 01:45:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 562 states have (on average 1.6209964412811388) internal successors, (911), 585 states have internal predecessors, (911), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1110 transitions. [2024-11-22 01:45:02,883 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1110 transitions. Word has length 127 [2024-11-22 01:45:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:02,884 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1110 transitions. [2024-11-22 01:45:02,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:45:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1110 transitions. [2024-11-22 01:45:02,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-22 01:45:02,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:02,886 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:02,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 01:45:03,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 01:45:03,088 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:03,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:03,091 INFO L85 PathProgramCache]: Analyzing trace with hash -884100379, now seen corresponding path program 1 times [2024-11-22 01:45:03,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:03,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572988103] [2024-11-22 01:45:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:03,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-22 01:45:03,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572988103] [2024-11-22 01:45:03,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572988103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:03,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654610143] [2024-11-22 01:45:03,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:03,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:03,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:03,188 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:03,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 01:45:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:03,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 01:45:03,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:45:03,525 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:03,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654610143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:03,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:03,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-22 01:45:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394881785] [2024-11-22 01:45:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:03,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:45:03,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:03,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:45:03,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:03,527 INFO L87 Difference]: Start difference. First operand 693 states and 1110 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:45:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:03,637 INFO L93 Difference]: Finished difference Result 1210 states and 1964 transitions. [2024-11-22 01:45:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:45:03,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2024-11-22 01:45:03,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:03,642 INFO L225 Difference]: With dead ends: 1210 [2024-11-22 01:45:03,642 INFO L226 Difference]: Without dead ends: 719 [2024-11-22 01:45:03,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:45:03,644 INFO L432 NwaCegarLoop]: 912 mSDtfsCounter, 119 mSDsluCounter, 5375 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:03,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6287 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:45:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-11-22 01:45:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 693. [2024-11-22 01:45:03,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 562 states have (on average 1.6209964412811388) internal successors, (911), 585 states have internal predecessors, (911), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1110 transitions. [2024-11-22 01:45:03,659 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1110 transitions. Word has length 128 [2024-11-22 01:45:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:03,660 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 1110 transitions. [2024-11-22 01:45:03,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-22 01:45:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1110 transitions. [2024-11-22 01:45:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-22 01:45:03,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:03,662 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:03,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-22 01:45:03,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 01:45:03,863 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:03,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash -363713341, now seen corresponding path program 1 times [2024-11-22 01:45:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:03,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599063447] [2024-11-22 01:45:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 01:45:03,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:03,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599063447] [2024-11-22 01:45:03,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599063447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118573569] [2024-11-22 01:45:03,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:03,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:03,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:03,965 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:03,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 01:45:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:04,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 01:45:04,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-22 01:45:04,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:04,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118573569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:04,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:04,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-22 01:45:04,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755816212] [2024-11-22 01:45:04,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:04,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:45:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:45:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:04,318 INFO L87 Difference]: Start difference. First operand 693 states and 1110 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:45:04,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:04,351 INFO L93 Difference]: Finished difference Result 1182 states and 1925 transitions. [2024-11-22 01:45:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:04,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2024-11-22 01:45:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:04,359 INFO L225 Difference]: With dead ends: 1182 [2024-11-22 01:45:04,359 INFO L226 Difference]: Without dead ends: 696 [2024-11-22 01:45:04,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:04,362 INFO L432 NwaCegarLoop]: 931 mSDtfsCounter, 0 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3716 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:04,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3716 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-22 01:45:04,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2024-11-22 01:45:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 565 states have (on average 1.6176991150442477) internal successors, (914), 588 states have internal predecessors, (914), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1113 transitions. [2024-11-22 01:45:04,380 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1113 transitions. Word has length 128 [2024-11-22 01:45:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:04,381 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 1113 transitions. [2024-11-22 01:45:04,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-22 01:45:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1113 transitions. [2024-11-22 01:45:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-22 01:45:04,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:04,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:04,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-22 01:45:04,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:04,585 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:04,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash -913115755, now seen corresponding path program 1 times [2024-11-22 01:45:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678866791] [2024-11-22 01:45:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:04,673 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:45:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678866791] [2024-11-22 01:45:04,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678866791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:04,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222823767] [2024-11-22 01:45:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:04,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:04,678 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:04,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 01:45:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:04,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:45:04,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:05,100 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:05,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222823767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:05,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:05,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-22 01:45:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466688111] [2024-11-22 01:45:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:05,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:45:05,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:45:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:05,101 INFO L87 Difference]: Start difference. First operand 696 states and 1113 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-22 01:45:05,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:05,528 INFO L93 Difference]: Finished difference Result 745 states and 1185 transitions. [2024-11-22 01:45:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:05,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2024-11-22 01:45:05,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:05,532 INFO L225 Difference]: With dead ends: 745 [2024-11-22 01:45:05,532 INFO L226 Difference]: Without dead ends: 730 [2024-11-22 01:45:05,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:05,533 INFO L432 NwaCegarLoop]: 924 mSDtfsCounter, 907 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:05,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 2396 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:45:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2024-11-22 01:45:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2024-11-22 01:45:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 568 states have (on average 1.6144366197183098) internal successors, (917), 591 states have internal predecessors, (917), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1116 transitions. [2024-11-22 01:45:05,549 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1116 transitions. Word has length 131 [2024-11-22 01:45:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:05,549 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 1116 transitions. [2024-11-22 01:45:05,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-22 01:45:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1116 transitions. [2024-11-22 01:45:05,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-22 01:45:05,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:05,552 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:05,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-22 01:45:05,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:05,753 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:05,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash -408020048, now seen corresponding path program 1 times [2024-11-22 01:45:05,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:05,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920531619] [2024-11-22 01:45:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:45:05,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920531619] [2024-11-22 01:45:05,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920531619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:05,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514894238] [2024-11-22 01:45:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:05,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:05,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:05,864 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:05,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 01:45:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:06,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:45:06,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:06,191 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:06,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:06,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514894238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:06,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:06,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-22 01:45:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104365893] [2024-11-22 01:45:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:06,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:45:06,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:06,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:45:06,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:06,193 INFO L87 Difference]: Start difference. First operand 699 states and 1116 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-22 01:45:06,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:06,209 INFO L93 Difference]: Finished difference Result 714 states and 1134 transitions. [2024-11-22 01:45:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:06,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2024-11-22 01:45:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:06,214 INFO L225 Difference]: With dead ends: 714 [2024-11-22 01:45:06,214 INFO L226 Difference]: Without dead ends: 699 [2024-11-22 01:45:06,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:06,215 INFO L432 NwaCegarLoop]: 931 mSDtfsCounter, 0 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3720 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:06,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3720 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-22 01:45:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-11-22 01:45:06,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 568 states have (on average 1.6126760563380282) internal successors, (916), 591 states have internal predecessors, (916), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2024-11-22 01:45:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1115 transitions. [2024-11-22 01:45:06,230 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1115 transitions. Word has length 137 [2024-11-22 01:45:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:06,230 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 1115 transitions. [2024-11-22 01:45:06,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-22 01:45:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1115 transitions. [2024-11-22 01:45:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-22 01:45:06,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:06,233 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:06,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-22 01:45:06,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:06,438 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:06,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:06,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1895807243, now seen corresponding path program 1 times [2024-11-22 01:45:06,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313717676] [2024-11-22 01:45:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:45:06,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313717676] [2024-11-22 01:45:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313717676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779093201] [2024-11-22 01:45:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:06,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:06,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:06,525 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:06,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 01:45:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:06,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:45:06,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:45:06,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779093201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:06,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:06,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-22 01:45:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785406317] [2024-11-22 01:45:06,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:06,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:45:06,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:45:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:45:06,876 INFO L87 Difference]: Start difference. First operand 699 states and 1115 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:45:06,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:06,910 INFO L93 Difference]: Finished difference Result 1372 states and 2200 transitions. [2024-11-22 01:45:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:06,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2024-11-22 01:45:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:06,914 INFO L225 Difference]: With dead ends: 1372 [2024-11-22 01:45:06,914 INFO L226 Difference]: Without dead ends: 668 [2024-11-22 01:45:06,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:45:06,916 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 7 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:06,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2768 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-22 01:45:06,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2024-11-22 01:45:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 540 states have (on average 1.6111111111111112) internal successors, (870), 561 states have internal predecessors, (870), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-11-22 01:45:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1065 transitions. [2024-11-22 01:45:06,930 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1065 transitions. Word has length 148 [2024-11-22 01:45:06,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:06,930 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1065 transitions. [2024-11-22 01:45:06,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:45:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1065 transitions. [2024-11-22 01:45:06,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-22 01:45:06,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:06,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:06,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-22 01:45:07,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:07,137 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:07,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:07,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1309592096, now seen corresponding path program 1 times [2024-11-22 01:45:07,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:07,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582109698] [2024-11-22 01:45:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 01:45:07,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582109698] [2024-11-22 01:45:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582109698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298131874] [2024-11-22 01:45:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:07,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:07,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:07,276 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:07,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-22 01:45:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:07,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 01:45:07,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:45:07,673 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:07,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298131874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:07,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:07,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-22 01:45:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184563427] [2024-11-22 01:45:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:07,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:45:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:45:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:07,675 INFO L87 Difference]: Start difference. First operand 668 states and 1065 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:07,740 INFO L93 Difference]: Finished difference Result 1305 states and 2094 transitions. [2024-11-22 01:45:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:07,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 150 [2024-11-22 01:45:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:07,744 INFO L225 Difference]: With dead ends: 1305 [2024-11-22 01:45:07,744 INFO L226 Difference]: Without dead ends: 668 [2024-11-22 01:45:07,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:45:07,747 INFO L432 NwaCegarLoop]: 943 mSDtfsCounter, 119 mSDsluCounter, 4589 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5532 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:07,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5532 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-22 01:45:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 647. [2024-11-22 01:45:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 519 states have (on average 1.6107899807321773) internal successors, (836), 540 states have internal predecessors, (836), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-11-22 01:45:07,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1031 transitions. [2024-11-22 01:45:07,762 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1031 transitions. Word has length 150 [2024-11-22 01:45:07,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:07,762 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 1031 transitions. [2024-11-22 01:45:07,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:07,762 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1031 transitions. [2024-11-22 01:45:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-22 01:45:07,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:07,765 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:07,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-22 01:45:07,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:07,970 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:07,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:07,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1927910811, now seen corresponding path program 1 times [2024-11-22 01:45:07,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:07,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387244574] [2024-11-22 01:45:07,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:07,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:45:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387244574] [2024-11-22 01:45:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387244574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:45:08,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794814356] [2024-11-22 01:45:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:08,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:08,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:45:08,082 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:45:08,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-22 01:45:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:08,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:45:08,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:45:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 01:45:08,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 01:45:08,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794814356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:08,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 01:45:08,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-22 01:45:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220560473] [2024-11-22 01:45:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:08,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:45:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:08,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:45:08,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:45:08,431 INFO L87 Difference]: Start difference. First operand 647 states and 1031 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:45:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:08,516 INFO L93 Difference]: Finished difference Result 1287 states and 2064 transitions. [2024-11-22 01:45:08,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:08,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 152 [2024-11-22 01:45:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:08,520 INFO L225 Difference]: With dead ends: 1287 [2024-11-22 01:45:08,520 INFO L226 Difference]: Without dead ends: 671 [2024-11-22 01:45:08,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:45:08,523 INFO L432 NwaCegarLoop]: 908 mSDtfsCounter, 128 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:08,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2647 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:45:08,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-22 01:45:08,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 647. [2024-11-22 01:45:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 519 states have (on average 1.6088631984585742) internal successors, (835), 540 states have internal predecessors, (835), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2024-11-22 01:45:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1030 transitions. [2024-11-22 01:45:08,547 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1030 transitions. Word has length 152 [2024-11-22 01:45:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:08,550 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 1030 transitions. [2024-11-22 01:45:08,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:45:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1030 transitions. [2024-11-22 01:45:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 01:45:08,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:08,557 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:08,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-22 01:45:08,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:45:08,757 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:08,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash -525693395, now seen corresponding path program 1 times [2024-11-22 01:45:08,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:08,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958331888] [2024-11-22 01:45:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 01:45:08,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:08,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958331888] [2024-11-22 01:45:08,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958331888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:08,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:08,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:45:08,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294880201] [2024-11-22 01:45:08,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:08,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:45:08,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:45:08,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:45:08,866 INFO L87 Difference]: Start difference. First operand 647 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:45:08,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:08,907 INFO L93 Difference]: Finished difference Result 1222 states and 1973 transitions. [2024-11-22 01:45:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:45:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2024-11-22 01:45:08,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:08,911 INFO L225 Difference]: With dead ends: 1222 [2024-11-22 01:45:08,911 INFO L226 Difference]: Without dead ends: 607 [2024-11-22 01:45:08,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:45:08,914 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 8 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:08,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2765 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-22 01:45:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2024-11-22 01:45:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 482 states have (on average 1.6016597510373445) internal successors, (772), 501 states have internal predecessors, (772), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:45:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 963 transitions. [2024-11-22 01:45:08,926 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 963 transitions. Word has length 153 [2024-11-22 01:45:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:08,926 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 963 transitions. [2024-11-22 01:45:08,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-22 01:45:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 963 transitions. [2024-11-22 01:45:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-22 01:45:08,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:08,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:08,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 01:45:08,929 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:08,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash 397255901, now seen corresponding path program 1 times [2024-11-22 01:45:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003760187] [2024-11-22 01:45:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 01:45:09,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:09,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003760187] [2024-11-22 01:45:09,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003760187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:09,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:09,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 01:45:09,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749864768] [2024-11-22 01:45:09,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:09,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:45:09,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:09,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:45:09,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:45:09,051 INFO L87 Difference]: Start difference. First operand 607 states and 963 transitions. Second operand has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:09,104 INFO L93 Difference]: Finished difference Result 1125 states and 1812 transitions. [2024-11-22 01:45:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:09,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 154 [2024-11-22 01:45:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:09,108 INFO L225 Difference]: With dead ends: 1125 [2024-11-22 01:45:09,108 INFO L226 Difference]: Without dead ends: 593 [2024-11-22 01:45:09,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:45:09,110 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 88 mSDsluCounter, 4452 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:09,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5358 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:45:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-22 01:45:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2024-11-22 01:45:09,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 468 states have (on average 1.5961538461538463) internal successors, (747), 487 states have internal predecessors, (747), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:45:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 938 transitions. [2024-11-22 01:45:09,122 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 938 transitions. Word has length 154 [2024-11-22 01:45:09,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:09,122 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 938 transitions. [2024-11-22 01:45:09,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 938 transitions. [2024-11-22 01:45:09,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 01:45:09,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:09,125 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:09,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 01:45:09,125 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:09,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash -957242692, now seen corresponding path program 1 times [2024-11-22 01:45:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320235671] [2024-11-22 01:45:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:45:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320235671] [2024-11-22 01:45:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320235671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:09,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:09,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 01:45:09,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323356206] [2024-11-22 01:45:09,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:09,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:45:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:45:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:09,373 INFO L87 Difference]: Start difference. First operand 593 states and 938 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:09,533 INFO L93 Difference]: Finished difference Result 1152 states and 1840 transitions. [2024-11-22 01:45:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 01:45:09,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 155 [2024-11-22 01:45:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:09,538 INFO L225 Difference]: With dead ends: 1152 [2024-11-22 01:45:09,538 INFO L226 Difference]: Without dead ends: 584 [2024-11-22 01:45:09,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-22 01:45:09,540 INFO L432 NwaCegarLoop]: 866 mSDtfsCounter, 45 mSDsluCounter, 6019 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6885 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:09,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6885 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:45:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-11-22 01:45:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2024-11-22 01:45:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 459 states have (on average 1.5947712418300655) internal successors, (732), 478 states have internal predecessors, (732), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:45:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 923 transitions. [2024-11-22 01:45:09,556 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 923 transitions. Word has length 155 [2024-11-22 01:45:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:09,556 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 923 transitions. [2024-11-22 01:45:09,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 923 transitions. [2024-11-22 01:45:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-22 01:45:09,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:09,559 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:09,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 01:45:09,559 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:09,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1214869958, now seen corresponding path program 1 times [2024-11-22 01:45:09,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:09,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696901355] [2024-11-22 01:45:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:09,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 01:45:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696901355] [2024-11-22 01:45:09,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696901355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:09,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:09,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 01:45:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608670947] [2024-11-22 01:45:09,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:09,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:45:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:09,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:45:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:09,782 INFO L87 Difference]: Start difference. First operand 584 states and 923 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:09,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:09,897 INFO L93 Difference]: Finished difference Result 1084 states and 1746 transitions. [2024-11-22 01:45:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 01:45:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 156 [2024-11-22 01:45:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:09,906 INFO L225 Difference]: With dead ends: 1084 [2024-11-22 01:45:09,906 INFO L226 Difference]: Without dead ends: 578 [2024-11-22 01:45:09,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-22 01:45:09,909 INFO L432 NwaCegarLoop]: 875 mSDtfsCounter, 31 mSDsluCounter, 6952 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7827 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:09,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7827 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:45:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-22 01:45:09,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2024-11-22 01:45:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 453 states have (on average 1.6004415011037527) internal successors, (725), 472 states have internal predecessors, (725), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-22 01:45:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 916 transitions. [2024-11-22 01:45:09,926 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 916 transitions. Word has length 156 [2024-11-22 01:45:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:09,927 INFO L471 AbstractCegarLoop]: Abstraction has 578 states and 916 transitions. [2024-11-22 01:45:09,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-22 01:45:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 916 transitions. [2024-11-22 01:45:09,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-22 01:45:09,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:09,929 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:09,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 01:45:09,929 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:09,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:09,930 INFO L85 PathProgramCache]: Analyzing trace with hash 991844996, now seen corresponding path program 1 times [2024-11-22 01:45:09,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:09,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106873724] [2024-11-22 01:45:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:09,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:10,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106873724] [2024-11-22 01:45:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106873724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:10,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:45:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498426450] [2024-11-22 01:45:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:10,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:45:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:45:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:10,049 INFO L87 Difference]: Start difference. First operand 578 states and 916 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:12,684 INFO L93 Difference]: Finished difference Result 1887 states and 3141 transitions. [2024-11-22 01:45:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:12,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 156 [2024-11-22 01:45:12,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:12,694 INFO L225 Difference]: With dead ends: 1887 [2024-11-22 01:45:12,694 INFO L226 Difference]: Without dead ends: 1395 [2024-11-22 01:45:12,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:12,701 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 3441 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 1032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3483 SdHoareTripleChecker+Valid, 2151 SdHoareTripleChecker+Invalid, 4574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:12,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3483 Valid, 2151 Invalid, 4574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1032 Valid, 3542 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-22 01:45:12,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-22 01:45:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1232. [2024-11-22 01:45:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 923 states have (on average 1.6132177681473456) internal successors, (1489), 974 states have internal predecessors, (1489), 259 states have call successors, (259), 46 states have call predecessors, (259), 49 states have return successors, (275), 253 states have call predecessors, (275), 254 states have call successors, (275) [2024-11-22 01:45:12,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 2023 transitions. [2024-11-22 01:45:12,802 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 2023 transitions. Word has length 156 [2024-11-22 01:45:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:12,802 INFO L471 AbstractCegarLoop]: Abstraction has 1232 states and 2023 transitions. [2024-11-22 01:45:12,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:12,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 2023 transitions. [2024-11-22 01:45:12,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-22 01:45:12,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:12,809 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:12,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 01:45:12,811 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:12,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1365136629, now seen corresponding path program 1 times [2024-11-22 01:45:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:12,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431232367] [2024-11-22 01:45:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:12,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:12,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431232367] [2024-11-22 01:45:12,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431232367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:12,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:12,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:45:12,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708176002] [2024-11-22 01:45:12,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:12,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:45:12,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:12,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:45:12,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:12,944 INFO L87 Difference]: Start difference. First operand 1232 states and 2023 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:15,401 INFO L93 Difference]: Finished difference Result 4622 states and 7897 transitions. [2024-11-22 01:45:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:15,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 157 [2024-11-22 01:45:15,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:15,424 INFO L225 Difference]: With dead ends: 4622 [2024-11-22 01:45:15,424 INFO L226 Difference]: Without dead ends: 3480 [2024-11-22 01:45:15,433 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:15,433 INFO L432 NwaCegarLoop]: 855 mSDtfsCounter, 3454 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 1056 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 4559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1056 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:15,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3497 Valid, 2164 Invalid, 4559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1056 Valid, 3503 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-22 01:45:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2024-11-22 01:45:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3019. [2024-11-22 01:45:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2141 states have (on average 1.608127043437646) internal successors, (3443), 2286 states have internal predecessors, (3443), 775 states have call successors, (775), 84 states have call predecessors, (775), 102 states have return successors, (893), 777 states have call predecessors, (893), 770 states have call successors, (893) [2024-11-22 01:45:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 5111 transitions. [2024-11-22 01:45:15,615 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 5111 transitions. Word has length 157 [2024-11-22 01:45:15,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:15,615 INFO L471 AbstractCegarLoop]: Abstraction has 3019 states and 5111 transitions. [2024-11-22 01:45:15,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 5111 transitions. [2024-11-22 01:45:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-22 01:45:15,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:15,618 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:15,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 01:45:15,619 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:15,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash -397027649, now seen corresponding path program 1 times [2024-11-22 01:45:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:15,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573330912] [2024-11-22 01:45:15,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:15,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:15,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573330912] [2024-11-22 01:45:15,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573330912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:15,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:15,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:45:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466791889] [2024-11-22 01:45:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:15,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:45:15,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:15,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:45:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:15,744 INFO L87 Difference]: Start difference. First operand 3019 states and 5111 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:18,791 INFO L93 Difference]: Finished difference Result 12792 states and 22416 transitions. [2024-11-22 01:45:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 158 [2024-11-22 01:45:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:18,872 INFO L225 Difference]: With dead ends: 12792 [2024-11-22 01:45:18,873 INFO L226 Difference]: Without dead ends: 9871 [2024-11-22 01:45:18,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:18,897 INFO L432 NwaCegarLoop]: 861 mSDtfsCounter, 3466 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3510 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 4569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:18,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3510 Valid, 2185 Invalid, 4569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-22 01:45:18,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9871 states. [2024-11-22 01:45:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9871 to 8386. [2024-11-22 01:45:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8386 states, 5636 states have (on average 1.5947480482611782) internal successors, (8988), 6074 states have internal predecessors, (8988), 2515 states have call successors, (2515), 160 states have call predecessors, (2515), 234 states have return successors, (3113), 2557 states have call predecessors, (3113), 2510 states have call successors, (3113) [2024-11-22 01:45:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8386 states to 8386 states and 14616 transitions. [2024-11-22 01:45:19,511 INFO L78 Accepts]: Start accepts. Automaton has 8386 states and 14616 transitions. Word has length 158 [2024-11-22 01:45:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:19,512 INFO L471 AbstractCegarLoop]: Abstraction has 8386 states and 14616 transitions. [2024-11-22 01:45:19,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 8386 states and 14616 transitions. [2024-11-22 01:45:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 01:45:19,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:19,516 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:19,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 01:45:19,516 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:19,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash 361151568, now seen corresponding path program 1 times [2024-11-22 01:45:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:19,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010097701] [2024-11-22 01:45:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:19,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:19,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010097701] [2024-11-22 01:45:19,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010097701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:19,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:19,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:45:19,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186743790] [2024-11-22 01:45:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:19,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:45:19,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:45:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:19,637 INFO L87 Difference]: Start difference. First operand 8386 states and 14616 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:23,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:23,716 INFO L93 Difference]: Finished difference Result 39166 states and 70266 transitions. [2024-11-22 01:45:23,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:23,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2024-11-22 01:45:23,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:23,894 INFO L225 Difference]: With dead ends: 39166 [2024-11-22 01:45:23,894 INFO L226 Difference]: Without dead ends: 30894 [2024-11-22 01:45:23,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:23,941 INFO L432 NwaCegarLoop]: 867 mSDtfsCounter, 3478 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 1061 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 4580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1061 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:23,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3523 Valid, 2206 Invalid, 4580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1061 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-22 01:45:23,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30894 states. [2024-11-22 01:45:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30894 to 25845. [2024-11-22 01:45:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25845 states, 16687 states have (on average 1.5823695091987775) internal successors, (26405), 18074 states have internal predecessors, (26405), 8559 states have call successors, (8559), 312 states have call predecessors, (8559), 598 states have return successors, (11311), 8777 states have call predecessors, (11311), 8554 states have call successors, (11311) [2024-11-22 01:45:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25845 states to 25845 states and 46275 transitions. [2024-11-22 01:45:25,927 INFO L78 Accepts]: Start accepts. Automaton has 25845 states and 46275 transitions. Word has length 159 [2024-11-22 01:45:25,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:25,928 INFO L471 AbstractCegarLoop]: Abstraction has 25845 states and 46275 transitions. [2024-11-22 01:45:25,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 25845 states and 46275 transitions. [2024-11-22 01:45:25,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 01:45:25,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:25,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:25,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-22 01:45:25,933 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:25,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:25,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1940567802, now seen corresponding path program 1 times [2024-11-22 01:45:25,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:25,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813770325] [2024-11-22 01:45:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:25,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:26,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813770325] [2024-11-22 01:45:26,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813770325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:26,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:26,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 01:45:26,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734905125] [2024-11-22 01:45:26,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:26,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 01:45:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 01:45:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:45:26,108 INFO L87 Difference]: Start difference. First operand 25845 states and 46275 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:45:36,429 INFO L93 Difference]: Finished difference Result 129256 states and 236494 transitions. [2024-11-22 01:45:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:45:36,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 160 [2024-11-22 01:45:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:45:37,564 INFO L225 Difference]: With dead ends: 129256 [2024-11-22 01:45:37,564 INFO L226 Difference]: Without dead ends: 103557 [2024-11-22 01:45:37,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:45:37,871 INFO L432 NwaCegarLoop]: 873 mSDtfsCounter, 3490 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 1063 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-22 01:45:37,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3536 Valid, 2227 Invalid, 4591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1063 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-22 01:45:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103557 states. [2024-11-22 01:45:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103557 to 85928. [2024-11-22 01:45:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85928 states, 54374 states have (on average 1.5760841578695701) internal successors, (85698), 58890 states have internal predecessors, (85698), 29835 states have call successors, (29835), 616 states have call predecessors, (29835), 1718 states have return successors, (41819), 30789 states have call predecessors, (41819), 29830 states have call successors, (41819) [2024-11-22 01:45:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85928 states to 85928 states and 157352 transitions. [2024-11-22 01:45:46,682 INFO L78 Accepts]: Start accepts. Automaton has 85928 states and 157352 transitions. Word has length 160 [2024-11-22 01:45:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:45:46,682 INFO L471 AbstractCegarLoop]: Abstraction has 85928 states and 157352 transitions. [2024-11-22 01:45:46,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-22 01:45:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 85928 states and 157352 transitions. [2024-11-22 01:45:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 01:45:46,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:45:46,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:45:46,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 01:45:46,688 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:45:46,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:45:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1675127240, now seen corresponding path program 1 times [2024-11-22 01:45:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:45:46,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731566013] [2024-11-22 01:45:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:45:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:45:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:45:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-22 01:45:46,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:45:46,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731566013] [2024-11-22 01:45:46,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731566013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:45:46,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:45:46,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 01:45:46,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115395340] [2024-11-22 01:45:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:45:46,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 01:45:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:45:46,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 01:45:46,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:45:46,949 INFO L87 Difference]: Start difference. First operand 85928 states and 157352 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16)