./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_spec13_product30.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 d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 20:25:06,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 20:25:06,752 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 20:25:06,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 20:25:06,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 20:25:06,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 20:25:06,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 20:25:06,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 20:25:06,785 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 20:25:06,789 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 20:25:06,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 20:25:06,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 20:25:06,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 20:25:06,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 20:25:06,791 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 20:25:06,791 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 20:25:06,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 20:25:06,792 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 20:25:06,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 20:25:06,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 20:25:06,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 20:25:06,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 20:25:06,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 20:25:06,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 20:25:06,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 20:25:06,795 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 20:25:06,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 20:25:06,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 20:25:06,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 20:25:06,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 20:25:06,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 20:25:06,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 20:25:06,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 20:25:06,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 20:25:06,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 20:25:06,799 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 20:25:06,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 20:25:06,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 20:25:06,800 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 20:25:06,800 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 20:25:06,800 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 20:25:06,801 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 20:25:06,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2024-11-11 20:25:07,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 20:25:07,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 20:25:07,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 20:25:07,102 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 20:25:07,104 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 20:25:07,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2024-11-11 20:25:08,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 20:25:08,847 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 20:25:08,847 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2024-11-11 20:25:08,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6f5abf0/bf5cd4b708f245619b2c161dfab9cd4e/FLAG1e9ae0b17 [2024-11-11 20:25:08,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba6f5abf0/bf5cd4b708f245619b2c161dfab9cd4e [2024-11-11 20:25:08,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 20:25:08,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 20:25:08,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 20:25:08,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 20:25:08,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 20:25:08,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 08:25:08" (1/1) ... [2024-11-11 20:25:08,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@731fcb63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:08, skipping insertion in model container [2024-11-11 20:25:08,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 08:25:08" (1/1) ... [2024-11-11 20:25:08,971 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 20:25:09,410 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_spec13_product30.cil.c[61393,61406] [2024-11-11 20:25:09,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 20:25:09,493 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 20:25:09,502 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-11-11 20:25:09,503 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [169] [2024-11-11 20:25:09,504 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [837] [2024-11-11 20:25:09,504 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [932] [2024-11-11 20:25:09,504 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1290] [2024-11-11 20:25:09,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1382] [2024-11-11 20:25:09,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2960] [2024-11-11 20:25:09,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2995] [2024-11-11 20:25:09,505 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3004] [2024-11-11 20:25:09,506 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3019] [2024-11-11 20:25:09,602 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_spec13_product30.cil.c[61393,61406] [2024-11-11 20:25:09,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 20:25:09,653 INFO L204 MainTranslator]: Completed translation [2024-11-11 20:25:09,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09 WrapperNode [2024-11-11 20:25:09,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 20:25:09,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 20:25:09,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 20:25:09,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 20:25:09,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,702 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,762 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 882 [2024-11-11 20:25:09,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 20:25:09,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 20:25:09,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 20:25:09,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 20:25:09,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,785 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,813 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]. [2024-11-11 20:25:09,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 20:25:09,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 20:25:09,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 20:25:09,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 20:25:09,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (1/1) ... [2024-11-11 20:25:09,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 20:25:09,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:09,926 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) [2024-11-11 20:25:09,933 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 [2024-11-11 20:25:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-11 20:25:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-11 20:25:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 20:25:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-11-11 20:25:09,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-11-11 20:25:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-11 20:25:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-11 20:25:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2024-11-11 20:25:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2024-11-11 20:25:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-11 20:25:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-11 20:25:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-11 20:25:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-11 20:25:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-11-11 20:25:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-11-11 20:25:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-11 20:25:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-11 20:25:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-11 20:25:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-11 20:25:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-11 20:25:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-11 20:25:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-11 20:25:09,978 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-11 20:25:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-11 20:25:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-11 20:25:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-11 20:25:09,979 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-11 20:25:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-11 20:25:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-11 20:25:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-11 20:25:09,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-11 20:25:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-11 20:25:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-11 20:25:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-11 20:25:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-11 20:25:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-11 20:25:09,982 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-11 20:25:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-11 20:25:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-11 20:25:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-11 20:25:09,983 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-11 20:25:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 20:25:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 20:25:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 20:25:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 20:25:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-11 20:25:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-11 20:25:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-11 20:25:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-11 20:25:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-11 20:25:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-11 20:25:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-11 20:25:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-11 20:25:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-11 20:25:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-11 20:25:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-11 20:25:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-11 20:25:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-11 20:25:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-11 20:25:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-11 20:25:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-11 20:25:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-11 20:25:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-11 20:25:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-11 20:25:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-11 20:25:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-11 20:25:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-11 20:25:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-11 20:25:09,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-11 20:25:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2024-11-11 20:25:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2024-11-11 20:25:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 20:25:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 20:25:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-11 20:25:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-11 20:25:10,175 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 20:25:10,178 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 20:25:11,384 INFO L? ?]: Removed 476 outVars from TransFormulas that were not future-live. [2024-11-11 20:25:11,384 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 20:25:11,412 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 20:25:11,412 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-11 20:25:11,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 08:25:11 BoogieIcfgContainer [2024-11-11 20:25:11,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 20:25:11,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 20:25:11,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 20:25:11,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 20:25:11,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 08:25:08" (1/3) ... [2024-11-11 20:25:11,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6969b992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 08:25:11, skipping insertion in model container [2024-11-11 20:25:11,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 08:25:09" (2/3) ... [2024-11-11 20:25:11,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6969b992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 08:25:11, skipping insertion in model container [2024-11-11 20:25:11,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 08:25:11" (3/3) ... [2024-11-11 20:25:11,420 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2024-11-11 20:25:11,436 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 20:25:11,436 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 20:25:11,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 20:25:11,540 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;@169df8f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 20:25:11,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 20:25:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 609 states, 479 states have (on average 1.6910229645093946) internal successors, (810), 499 states have internal predecessors, (810), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-11 20:25:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-11 20:25:11,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:11,584 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:11,585 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:11,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:11,591 INFO L85 PathProgramCache]: Analyzing trace with hash -188363818, now seen corresponding path program 1 times [2024-11-11 20:25:11,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:11,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113233176] [2024-11-11 20:25:11,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-11 20:25:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-11 20:25:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-11 20:25:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-11 20:25:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-11 20:25:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-11 20:25:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-11 20:25:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 20:25:12,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:12,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113233176] [2024-11-11 20:25:12,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113233176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478264346] [2024-11-11 20:25:12,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:12,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:12,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:12,947 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) [2024-11-11 20:25:12,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 20:25:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:13,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-11 20:25:13,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-11 20:25:13,393 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:13,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478264346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:13,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:13,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2024-11-11 20:25:13,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402122521] [2024-11-11 20:25:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:13,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 20:25:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:13,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 20:25:13,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 20:25:13,430 INFO L87 Difference]: Start difference. First operand has 609 states, 479 states have (on average 1.6910229645093946) internal successors, (810), 499 states have internal predecessors, (810), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-11 20:25:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:13,552 INFO L93 Difference]: Finished difference Result 1196 states and 2011 transitions. [2024-11-11 20:25:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 20:25:13,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2024-11-11 20:25:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:13,579 INFO L225 Difference]: With dead ends: 1196 [2024-11-11 20:25:13,580 INFO L226 Difference]: Without dead ends: 599 [2024-11-11 20:25:13,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 20:25:13,594 INFO L435 NwaCegarLoop]: 1002 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, 1002 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 [2024-11-11 20:25:13,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:25:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-11 20:25:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2024-11-11 20:25:13,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 472 states have (on average 1.673728813559322) internal successors, (790), 490 states have internal predecessors, (790), 102 states have call successors, (102), 26 states have call predecessors, (102), 24 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-11 20:25:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 991 transitions. [2024-11-11 20:25:13,698 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 991 transitions. Word has length 99 [2024-11-11 20:25:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:13,700 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 991 transitions. [2024-11-11 20:25:13,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-11 20:25:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 991 transitions. [2024-11-11 20:25:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-11 20:25:13,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:13,709 INFO L218 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] [2024-11-11 20:25:13,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 20:25:13,910 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 [2024-11-11 20:25:13,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:13,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1126882367, now seen corresponding path program 1 times [2024-11-11 20:25:13,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546351780] [2024-11-11 20:25:13,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-11 20:25:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-11 20:25:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-11 20:25:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-11 20:25:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-11 20:25:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-11 20:25:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-11 20:25:14,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:14,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546351780] [2024-11-11 20:25:14,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546351780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:14,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863029530] [2024-11-11 20:25:14,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:14,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:14,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:14,263 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) [2024-11-11 20:25:14,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 20:25:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:14,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 20:25:14,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:14,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-11 20:25:14,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:14,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863029530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:14,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:14,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-11 20:25:14,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115044941] [2024-11-11 20:25:14,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:14,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 20:25:14,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:14,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 20:25:14,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 20:25:14,602 INFO L87 Difference]: Start difference. First operand 599 states and 991 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:14,763 INFO L93 Difference]: Finished difference Result 1199 states and 1990 transitions. [2024-11-11 20:25:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 20:25:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2024-11-11 20:25:14,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:14,771 INFO L225 Difference]: With dead ends: 1199 [2024-11-11 20:25:14,771 INFO L226 Difference]: Without dead ends: 608 [2024-11-11 20:25:14,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-11 20:25:14,777 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 17 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:14,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2926 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-11 20:25:14,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2024-11-11 20:25:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 480 states have (on average 1.675) internal successors, (804), 498 states have internal predecessors, (804), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-11 20:25:14,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1005 transitions. [2024-11-11 20:25:14,816 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1005 transitions. Word has length 83 [2024-11-11 20:25:14,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:14,817 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 1005 transitions. [2024-11-11 20:25:14,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1005 transitions. [2024-11-11 20:25:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-11 20:25:14,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:14,820 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-11-11 20:25:14,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 20:25:15,021 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 [2024-11-11 20:25:15,022 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:15,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash 368759945, now seen corresponding path program 1 times [2024-11-11 20:25:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:15,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799156598] [2024-11-11 20:25:15,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:15,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:25:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-11 20:25:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-11 20:25:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-11 20:25:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-11 20:25:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-11 20:25:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-11 20:25:15,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799156598] [2024-11-11 20:25:15,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799156598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:15,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002499880] [2024-11-11 20:25:15,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:15,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:15,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:15,502 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) [2024-11-11 20:25:15,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 20:25:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:15,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 20:25:15,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 20:25:15,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002499880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:15,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:15,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-11 20:25:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842468701] [2024-11-11 20:25:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:15,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 20:25:15,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 20:25:15,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-11 20:25:15,847 INFO L87 Difference]: Start difference. First operand 608 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:16,108 INFO L93 Difference]: Finished difference Result 1269 states and 2114 transitions. [2024-11-11 20:25:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 20:25:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2024-11-11 20:25:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:16,114 INFO L225 Difference]: With dead ends: 1269 [2024-11-11 20:25:16,114 INFO L226 Difference]: Without dead ends: 671 [2024-11-11 20:25:16,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-11 20:25:16,118 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 122 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:16,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2821 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 20:25:16,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-11 20:25:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 653. [2024-11-11 20:25:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 524 states have (on average 1.6946564885496183) internal successors, (888), 542 states have internal predecessors, (888), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-11-11 20:25:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1089 transitions. [2024-11-11 20:25:16,148 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1089 transitions. Word has length 85 [2024-11-11 20:25:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:16,148 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 1089 transitions. [2024-11-11 20:25:16,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1089 transitions. [2024-11-11 20:25:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-11 20:25:16,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:16,153 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:16,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-11 20:25:16,356 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 [2024-11-11 20:25:16,357 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:16,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash 809213068, now seen corresponding path program 1 times [2024-11-11 20:25:16,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:16,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891316514] [2024-11-11 20:25:16,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:16,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:25:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-11 20:25:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-11 20:25:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:16,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-11 20:25:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:17,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-11 20:25:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:17,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-11 20:25:17,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:17,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-11 20:25:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-11 20:25:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891316514] [2024-11-11 20:25:17,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891316514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422496795] [2024-11-11 20:25:17,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:17,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:17,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:17,013 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) [2024-11-11 20:25:17,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 20:25:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:17,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:25:17,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 20:25:17,436 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:17,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422496795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:17,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:17,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-11 20:25:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279405824] [2024-11-11 20:25:17,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:17,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 20:25:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 20:25:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-11 20:25:17,438 INFO L87 Difference]: Start difference. First operand 653 states and 1089 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:17,571 INFO L93 Difference]: Finished difference Result 1321 states and 2205 transitions. [2024-11-11 20:25:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 20:25:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2024-11-11 20:25:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:17,576 INFO L225 Difference]: With dead ends: 1321 [2024-11-11 20:25:17,577 INFO L226 Difference]: Without dead ends: 678 [2024-11-11 20:25:17,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-11 20:25:17,581 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 89 mSDsluCounter, 4798 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5776 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:17,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5776 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2024-11-11 20:25:17,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 666. [2024-11-11 20:25:17,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 534 states have (on average 1.6910112359550562) internal successors, (903), 554 states have internal predecessors, (903), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-11 20:25:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1110 transitions. [2024-11-11 20:25:17,622 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1110 transitions. Word has length 103 [2024-11-11 20:25:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:17,623 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1110 transitions. [2024-11-11 20:25:17,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1110 transitions. [2024-11-11 20:25:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-11 20:25:17,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:17,626 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:17,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 20:25:17,826 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 [2024-11-11 20:25:17,827 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:17,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -6785947, now seen corresponding path program 1 times [2024-11-11 20:25:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:17,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039558987] [2024-11-11 20:25:17,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:17,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:25:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 20:25:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-11 20:25:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-11 20:25:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-11 20:25:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-11 20:25:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-11 20:25:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-11 20:25:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039558987] [2024-11-11 20:25:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039558987] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115895044] [2024-11-11 20:25:18,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:18,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:18,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:18,440 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) [2024-11-11 20:25:18,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 20:25:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:18,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:25:18,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 20:25:18,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:18,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115895044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:18,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:18,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-11 20:25:18,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411435986] [2024-11-11 20:25:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:18,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 20:25:18,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 20:25:18,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-11 20:25:18,828 INFO L87 Difference]: Start difference. First operand 666 states and 1110 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:18,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:18,955 INFO L93 Difference]: Finished difference Result 1341 states and 2236 transitions. [2024-11-11 20:25:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 20:25:18,956 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2024-11-11 20:25:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:18,962 INFO L225 Difference]: With dead ends: 1341 [2024-11-11 20:25:18,962 INFO L226 Difference]: Without dead ends: 687 [2024-11-11 20:25:18,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-11 20:25:18,966 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 100 mSDsluCounter, 4786 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5764 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:18,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5764 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-11 20:25:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 666. [2024-11-11 20:25:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 534 states have (on average 1.6910112359550562) internal successors, (903), 554 states have internal predecessors, (903), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2024-11-11 20:25:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1110 transitions. [2024-11-11 20:25:19,035 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1110 transitions. Word has length 104 [2024-11-11 20:25:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:19,036 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1110 transitions. [2024-11-11 20:25:19,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1110 transitions. [2024-11-11 20:25:19,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-11 20:25:19,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:19,039 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:19,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-11 20:25:19,239 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 [2024-11-11 20:25:19,240 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:19,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2133654803, now seen corresponding path program 1 times [2024-11-11 20:25:19,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:19,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971957477] [2024-11-11 20:25:19,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:19,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-11 20:25:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-11 20:25:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-11 20:25:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-11 20:25:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-11 20:25:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-11 20:25:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-11 20:25:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-11 20:25:19,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971957477] [2024-11-11 20:25:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971957477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:19,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120198036] [2024-11-11 20:25:19,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:19,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:19,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:19,795 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) [2024-11-11 20:25:19,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 20:25:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 20:25:20,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-11 20:25:20,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120198036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:20,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-11 20:25:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416104660] [2024-11-11 20:25:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:20,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 20:25:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:20,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 20:25:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-11 20:25:20,147 INFO L87 Difference]: Start difference. First operand 666 states and 1110 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-11 20:25:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:20,236 INFO L93 Difference]: Finished difference Result 1335 states and 2226 transitions. [2024-11-11 20:25:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 20:25:20,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2024-11-11 20:25:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:20,244 INFO L225 Difference]: With dead ends: 1335 [2024-11-11 20:25:20,244 INFO L226 Difference]: Without dead ends: 677 [2024-11-11 20:25:20,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-11 20:25:20,249 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 12 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:20,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2928 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:25:20,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-11 20:25:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 675. [2024-11-11 20:25:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-11 20:25:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2024-11-11 20:25:20,276 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 104 [2024-11-11 20:25:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:20,276 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2024-11-11 20:25:20,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-11 20:25:20,277 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2024-11-11 20:25:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-11 20:25:20,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:20,280 INFO L218 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] [2024-11-11 20:25:20,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-11 20:25:20,481 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 [2024-11-11 20:25:20,482 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:20,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:20,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2074495847, now seen corresponding path program 1 times [2024-11-11 20:25:20,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:20,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081952887] [2024-11-11 20:25:20,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:20,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:25:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-11 20:25:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-11 20:25:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-11 20:25:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-11 20:25:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-11 20:25:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 20:25:20,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:20,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081952887] [2024-11-11 20:25:20,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081952887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:20,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264850354] [2024-11-11 20:25:20,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:20,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:20,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:20,828 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) [2024-11-11 20:25:20,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 20:25:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:21,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:25:21,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 20:25:21,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:21,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264850354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:21,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:21,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-11 20:25:21,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891420892] [2024-11-11 20:25:21,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:21,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 20:25:21,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:21,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 20:25:21,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-11 20:25:21,159 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:21,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:21,302 INFO L93 Difference]: Finished difference Result 1350 states and 2239 transitions. [2024-11-11 20:25:21,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 20:25:21,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 89 [2024-11-11 20:25:21,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:21,309 INFO L225 Difference]: With dead ends: 1350 [2024-11-11 20:25:21,309 INFO L226 Difference]: Without dead ends: 698 [2024-11-11 20:25:21,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-11 20:25:21,314 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 111 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:21,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5752 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-11 20:25:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 675. [2024-11-11 20:25:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-11 20:25:21,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2024-11-11 20:25:21,346 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 89 [2024-11-11 20:25:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:21,348 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2024-11-11 20:25:21,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2024-11-11 20:25:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-11 20:25:21,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:21,351 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:21,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-11 20:25:21,552 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 [2024-11-11 20:25:21,552 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:21,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:21,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1365597394, now seen corresponding path program 1 times [2024-11-11 20:25:21,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:21,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584208824] [2024-11-11 20:25:21,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:21,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:21,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:25:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:21,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-11 20:25:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:21,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:21,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-11 20:25:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-11 20:25:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-11 20:25:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-11 20:25:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-11 20:25:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-11 20:25:22,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:22,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584208824] [2024-11-11 20:25:22,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584208824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:22,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003385578] [2024-11-11 20:25:22,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:22,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:22,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:22,171 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) [2024-11-11 20:25:22,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 20:25:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:22,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 20:25:22,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 20:25:22,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003385578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:22,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:22,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-11 20:25:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418936823] [2024-11-11 20:25:22,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:22,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 20:25:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:22,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 20:25:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-11 20:25:22,616 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:22,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:22,769 INFO L93 Difference]: Finished difference Result 1353 states and 2243 transitions. [2024-11-11 20:25:22,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 20:25:22,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2024-11-11 20:25:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:22,775 INFO L225 Difference]: With dead ends: 1353 [2024-11-11 20:25:22,776 INFO L226 Difference]: Without dead ends: 701 [2024-11-11 20:25:22,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-11 20:25:22,780 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 95 mSDsluCounter, 5711 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6679 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:22,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6679 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-11 20:25:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 675. [2024-11-11 20:25:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-11 20:25:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2024-11-11 20:25:22,803 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 105 [2024-11-11 20:25:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:22,804 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2024-11-11 20:25:22,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2024-11-11 20:25:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-11 20:25:22,806 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:22,807 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:22,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 20:25:23,007 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 [2024-11-11 20:25:23,008 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:23,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1529219991, now seen corresponding path program 1 times [2024-11-11 20:25:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:23,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844840389] [2024-11-11 20:25:23,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:23,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:25:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:25:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-11 20:25:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-11 20:25:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-11 20:25:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-11 20:25:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-11-11 20:25:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,629 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-11 20:25:23,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:23,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844840389] [2024-11-11 20:25:23,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844840389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:23,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127367097] [2024-11-11 20:25:23,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:23,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:23,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:23,632 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) [2024-11-11 20:25:23,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 20:25:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:23,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 20:25:23,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:24,032 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-11 20:25:24,033 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127367097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:24,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:24,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-11 20:25:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245446263] [2024-11-11 20:25:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:24,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 20:25:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 20:25:24,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-11 20:25:24,036 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:24,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:24,211 INFO L93 Difference]: Finished difference Result 1353 states and 2243 transitions. [2024-11-11 20:25:24,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 20:25:24,212 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2024-11-11 20:25:24,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:24,218 INFO L225 Difference]: With dead ends: 1353 [2024-11-11 20:25:24,219 INFO L226 Difference]: Without dead ends: 701 [2024-11-11 20:25:24,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-11 20:25:24,223 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 105 mSDsluCounter, 5699 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6667 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:24,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6667 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-11 20:25:24,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 675. [2024-11-11 20:25:24,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-11 20:25:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2024-11-11 20:25:24,250 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 106 [2024-11-11 20:25:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:24,251 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2024-11-11 20:25:24,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2024-11-11 20:25:24,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-11 20:25:24,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:24,253 INFO L218 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] [2024-11-11 20:25:24,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-11 20:25:24,454 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 [2024-11-11 20:25:24,454 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:24,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash 626488640, now seen corresponding path program 1 times [2024-11-11 20:25:24,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:24,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924817458] [2024-11-11 20:25:24,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:24,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:25:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-11 20:25:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-11 20:25:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-11 20:25:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-11 20:25:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:24,738 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 20:25:24,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924817458] [2024-11-11 20:25:24,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924817458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:24,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741745593] [2024-11-11 20:25:24,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:24,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:24,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:24,741 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) [2024-11-11 20:25:24,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 20:25:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:25,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 20:25:25,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-11 20:25:25,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:25,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741745593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:25,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:25,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-11 20:25:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924109888] [2024-11-11 20:25:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:25,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 20:25:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 20:25:25,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-11 20:25:25,145 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:25,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:25,311 INFO L93 Difference]: Finished difference Result 1344 states and 2228 transitions. [2024-11-11 20:25:25,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 20:25:25,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 91 [2024-11-11 20:25:25,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:25,317 INFO L225 Difference]: With dead ends: 1344 [2024-11-11 20:25:25,317 INFO L226 Difference]: Without dead ends: 692 [2024-11-11 20:25:25,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-11 20:25:25,321 INFO L435 NwaCegarLoop]: 968 mSDtfsCounter, 115 mSDsluCounter, 5687 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 6655 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:25,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 6655 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-11 20:25:25,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 675. [2024-11-11 20:25:25,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6826568265682658) internal successors, (912), 562 states have internal predecessors, (912), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-11 20:25:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1118 transitions. [2024-11-11 20:25:25,343 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1118 transitions. Word has length 91 [2024-11-11 20:25:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:25,343 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1118 transitions. [2024-11-11 20:25:25,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1118 transitions. [2024-11-11 20:25:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-11 20:25:25,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:25,345 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:25,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-11 20:25:25,550 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 [2024-11-11 20:25:25,551 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:25,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash -626960683, now seen corresponding path program 1 times [2024-11-11 20:25:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344830693] [2024-11-11 20:25:25,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:25,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:25,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:25,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:25,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:25,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:25,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-11 20:25:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-11 20:25:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-11 20:25:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-11-11 20:25:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-11-11 20:25:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-11 20:25:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-11 20:25:26,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344830693] [2024-11-11 20:25:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344830693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249741271] [2024-11-11 20:25:26,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:26,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:26,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:26,083 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) [2024-11-11 20:25:26,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 20:25:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 20:25:26,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 20:25:26,480 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249741271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-11 20:25:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97660296] [2024-11-11 20:25:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:26,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 20:25:26,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 20:25:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-11 20:25:26,483 INFO L87 Difference]: Start difference. First operand 675 states and 1118 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-11 20:25:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:26,561 INFO L93 Difference]: Finished difference Result 1316 states and 2188 transitions. [2024-11-11 20:25:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 20:25:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2024-11-11 20:25:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:26,568 INFO L225 Difference]: With dead ends: 1316 [2024-11-11 20:25:26,568 INFO L226 Difference]: Without dead ends: 675 [2024-11-11 20:25:26,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-11 20:25:26,573 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 20 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:26,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2922 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:25:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2024-11-11 20:25:26,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2024-11-11 20:25:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 542 states have (on average 1.6734317343173433) internal successors, (907), 562 states have internal predecessors, (907), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2024-11-11 20:25:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1113 transitions. [2024-11-11 20:25:26,598 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1113 transitions. Word has length 107 [2024-11-11 20:25:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:26,598 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 1113 transitions. [2024-11-11 20:25:26,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-11 20:25:26,599 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1113 transitions. [2024-11-11 20:25:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-11 20:25:26,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:26,601 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-11 20:25:26,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-11 20:25:26,802 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 [2024-11-11 20:25:26,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:26,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 56703267, now seen corresponding path program 1 times [2024-11-11 20:25:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:26,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512553390] [2024-11-11 20:25:26,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:26,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-11 20:25:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-11 20:25:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-11 20:25:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-11 20:25:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-11 20:25:27,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:27,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512553390] [2024-11-11 20:25:27,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512553390] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:27,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573414139] [2024-11-11 20:25:27,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:27,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:27,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:27,087 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) [2024-11-11 20:25:27,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 20:25:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 20:25:27,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-11 20:25:27,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:27,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573414139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:27,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:27,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-11 20:25:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866412184] [2024-11-11 20:25:27,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:27,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 20:25:27,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:27,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 20:25:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-11 20:25:27,372 INFO L87 Difference]: Start difference. First operand 675 states and 1113 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:27,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:27,556 INFO L93 Difference]: Finished difference Result 1345 states and 2228 transitions. [2024-11-11 20:25:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 20:25:27,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2024-11-11 20:25:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:27,562 INFO L225 Difference]: With dead ends: 1345 [2024-11-11 20:25:27,563 INFO L226 Difference]: Without dead ends: 762 [2024-11-11 20:25:27,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-11 20:25:27,566 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 171 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:27,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2794 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 20:25:27,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-11 20:25:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 720. [2024-11-11 20:25:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 586 states have (on average 1.6911262798634812) internal successors, (991), 606 states have internal predecessors, (991), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-11-11 20:25:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1196 transitions. [2024-11-11 20:25:27,591 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1196 transitions. Word has length 92 [2024-11-11 20:25:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:27,591 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1196 transitions. [2024-11-11 20:25:27,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1196 transitions. [2024-11-11 20:25:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-11 20:25:27,596 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:27,596 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-11-11 20:25:27,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-11 20:25:27,797 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 [2024-11-11 20:25:27,797 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:27,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1863512470, now seen corresponding path program 1 times [2024-11-11 20:25:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052550528] [2024-11-11 20:25:27,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:27,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-11 20:25:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-11 20:25:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-11 20:25:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-11 20:25:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-11 20:25:28,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052550528] [2024-11-11 20:25:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052550528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475409027] [2024-11-11 20:25:28,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:28,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:28,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:28,026 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) [2024-11-11 20:25:28,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-11 20:25:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:25:28,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:28,382 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 20:25:28,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:28,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475409027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:28,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:28,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-11 20:25:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208380864] [2024-11-11 20:25:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:28,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 20:25:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 20:25:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-11 20:25:28,385 INFO L87 Difference]: Start difference. First operand 720 states and 1196 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:28,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:28,484 INFO L93 Difference]: Finished difference Result 1338 states and 2215 transitions. [2024-11-11 20:25:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 20:25:28,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 93 [2024-11-11 20:25:28,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:28,490 INFO L225 Difference]: With dead ends: 1338 [2024-11-11 20:25:28,490 INFO L226 Difference]: Without dead ends: 755 [2024-11-11 20:25:28,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-11 20:25:28,494 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 89 mSDsluCounter, 4806 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5785 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:28,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5785 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:28,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-11 20:25:28,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 733. [2024-11-11 20:25:28,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6879194630872483) internal successors, (1006), 618 states have internal predecessors, (1006), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-11 20:25:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1215 transitions. [2024-11-11 20:25:28,516 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1215 transitions. Word has length 93 [2024-11-11 20:25:28,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:28,516 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1215 transitions. [2024-11-11 20:25:28,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:28,516 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1215 transitions. [2024-11-11 20:25:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-11 20:25:28,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:28,519 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:28,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-11 20:25:28,720 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 [2024-11-11 20:25:28,720 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:28,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1037638624, now seen corresponding path program 1 times [2024-11-11 20:25:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059489645] [2024-11-11 20:25:28,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:28,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-11 20:25:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-11 20:25:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-11 20:25:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-11 20:25:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-11-11 20:25:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-11 20:25:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059489645] [2024-11-11 20:25:29,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059489645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:29,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374902913] [2024-11-11 20:25:29,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:29,204 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) [2024-11-11 20:25:29,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-11 20:25:29,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:25:29,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-11 20:25:29,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:29,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374902913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:29,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:29,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-11 20:25:29,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292382883] [2024-11-11 20:25:29,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:29,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 20:25:29,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 20:25:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-11 20:25:29,570 INFO L87 Difference]: Start difference. First operand 733 states and 1215 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:29,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:29,688 INFO L93 Difference]: Finished difference Result 1347 states and 2229 transitions. [2024-11-11 20:25:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-11 20:25:29,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2024-11-11 20:25:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:29,693 INFO L225 Difference]: With dead ends: 1347 [2024-11-11 20:25:29,693 INFO L226 Difference]: Without dead ends: 764 [2024-11-11 20:25:29,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-11 20:25:29,696 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 100 mSDsluCounter, 4794 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5773 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:29,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5773 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:29,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-11 20:25:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 733. [2024-11-11 20:25:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6879194630872483) internal successors, (1006), 618 states have internal predecessors, (1006), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-11 20:25:29,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1215 transitions. [2024-11-11 20:25:29,719 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1215 transitions. Word has length 110 [2024-11-11 20:25:29,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:29,719 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1215 transitions. [2024-11-11 20:25:29,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-11 20:25:29,720 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1215 transitions. [2024-11-11 20:25:29,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-11 20:25:29,723 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:29,723 INFO L218 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] [2024-11-11 20:25:29,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-11 20:25:29,923 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 [2024-11-11 20:25:29,924 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:29,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash -627689623, now seen corresponding path program 1 times [2024-11-11 20:25:29,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:29,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139162958] [2024-11-11 20:25:29,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:29,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-11 20:25:30,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-11 20:25:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-11 20:25:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-11 20:25:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-11 20:25:30,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:30,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139162958] [2024-11-11 20:25:30,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139162958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:30,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516549993] [2024-11-11 20:25:30,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:30,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:30,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:30,224 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) [2024-11-11 20:25:30,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-11 20:25:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:30,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 20:25:30,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 20:25:30,577 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:30,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516549993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:30,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:30,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-11 20:25:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475010315] [2024-11-11 20:25:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:30,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 20:25:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 20:25:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-11 20:25:30,579 INFO L87 Difference]: Start difference. First operand 733 states and 1215 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:30,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:30,735 INFO L93 Difference]: Finished difference Result 1350 states and 2232 transitions. [2024-11-11 20:25:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 20:25:30,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2024-11-11 20:25:30,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:30,741 INFO L225 Difference]: With dead ends: 1350 [2024-11-11 20:25:30,742 INFO L226 Difference]: Without dead ends: 767 [2024-11-11 20:25:30,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-11 20:25:30,747 INFO L435 NwaCegarLoop]: 969 mSDtfsCounter, 96 mSDsluCounter, 5720 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6689 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:30,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6689 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-11 20:25:30,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 733. [2024-11-11 20:25:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6879194630872483) internal successors, (1006), 618 states have internal predecessors, (1006), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-11 20:25:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1215 transitions. [2024-11-11 20:25:30,770 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1215 transitions. Word has length 94 [2024-11-11 20:25:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:30,770 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1215 transitions. [2024-11-11 20:25:30,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:30,770 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1215 transitions. [2024-11-11 20:25:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-11 20:25:30,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:30,773 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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] [2024-11-11 20:25:30,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-11 20:25:30,973 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 [2024-11-11 20:25:30,974 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:30,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1789623721, now seen corresponding path program 1 times [2024-11-11 20:25:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860717303] [2024-11-11 20:25:30,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 20:25:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-11 20:25:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-11 20:25:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-11 20:25:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-11 20:25:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,202 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 20:25:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860717303] [2024-11-11 20:25:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860717303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:31,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386721665] [2024-11-11 20:25:31,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:31,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:31,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:31,205 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) [2024-11-11 20:25:31,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-11 20:25:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 20:25:31,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-11 20:25:31,478 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:31,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386721665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:31,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:31,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-11 20:25:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814641372] [2024-11-11 20:25:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:31,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 20:25:31,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 20:25:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-11 20:25:31,480 INFO L87 Difference]: Start difference. First operand 733 states and 1215 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:31,525 INFO L93 Difference]: Finished difference Result 1392 states and 2311 transitions. [2024-11-11 20:25:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 20:25:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2024-11-11 20:25:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:31,532 INFO L225 Difference]: With dead ends: 1392 [2024-11-11 20:25:31,533 INFO L226 Difference]: Without dead ends: 733 [2024-11-11 20:25:31,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-11 20:25:31,537 INFO L435 NwaCegarLoop]: 980 mSDtfsCounter, 2 mSDsluCounter, 1951 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:31,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2931 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:25:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2024-11-11 20:25:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2024-11-11 20:25:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6828859060402686) internal successors, (1003), 618 states have internal predecessors, (1003), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-11 20:25:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1212 transitions. [2024-11-11 20:25:31,563 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1212 transitions. Word has length 94 [2024-11-11 20:25:31,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:31,564 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1212 transitions. [2024-11-11 20:25:31,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-11 20:25:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1212 transitions. [2024-11-11 20:25:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-11 20:25:31,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:31,567 INFO L218 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] [2024-11-11 20:25:31,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-11 20:25:31,767 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 [2024-11-11 20:25:31,767 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:31,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1162070760, now seen corresponding path program 1 times [2024-11-11 20:25:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:31,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489608287] [2024-11-11 20:25:31,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-11 20:25:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-11 20:25:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-11 20:25:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-11 20:25:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-11 20:25:31,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:31,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489608287] [2024-11-11 20:25:31,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489608287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:31,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367284395] [2024-11-11 20:25:31,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:31,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:31,977 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) [2024-11-11 20:25:31,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-11 20:25:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:32,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 20:25:32,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-11 20:25:32,275 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367284395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:32,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:32,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-11 20:25:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51006515] [2024-11-11 20:25:32,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:32,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-11 20:25:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:32,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-11 20:25:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-11 20:25:32,278 INFO L87 Difference]: Start difference. First operand 733 states and 1212 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:32,421 INFO L93 Difference]: Finished difference Result 1341 states and 2215 transitions. [2024-11-11 20:25:32,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 20:25:32,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2024-11-11 20:25:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:32,427 INFO L225 Difference]: With dead ends: 1341 [2024-11-11 20:25:32,427 INFO L226 Difference]: Without dead ends: 758 [2024-11-11 20:25:32,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-11 20:25:32,430 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 106 mSDsluCounter, 5693 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6659 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:32,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6659 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 20:25:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-11 20:25:32,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 733. [2024-11-11 20:25:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 596 states have (on average 1.6828859060402686) internal successors, (1003), 618 states have internal predecessors, (1003), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2024-11-11 20:25:32,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1212 transitions. [2024-11-11 20:25:32,452 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1212 transitions. Word has length 95 [2024-11-11 20:25:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:32,452 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1212 transitions. [2024-11-11 20:25:32,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-11 20:25:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1212 transitions. [2024-11-11 20:25:32,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-11 20:25:32,455 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:32,455 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:32,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-11 20:25:32,655 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 [2024-11-11 20:25:32,656 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:32,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash 993553349, now seen corresponding path program 1 times [2024-11-11 20:25:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:32,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463255805] [2024-11-11 20:25:32,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:32,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:32,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:32,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:32,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:32,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:32,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-11 20:25:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-11 20:25:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-11-11 20:25:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-11-11 20:25:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-11 20:25:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-11 20:25:33,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463255805] [2024-11-11 20:25:33,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463255805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:33,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686961934] [2024-11-11 20:25:33,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:33,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:33,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:33,079 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) [2024-11-11 20:25:33,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-11 20:25:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:33,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-11 20:25:33,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 20:25:33,558 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:33,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686961934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:33,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:33,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-11-11 20:25:33,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918133187] [2024-11-11 20:25:33,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:33,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 20:25:33,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 20:25:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-11 20:25:33,560 INFO L87 Difference]: Start difference. First operand 733 states and 1212 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-11 20:25:36,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:36,882 INFO L93 Difference]: Finished difference Result 2520 states and 4211 transitions. [2024-11-11 20:25:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 20:25:36,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-11-11 20:25:36,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:36,896 INFO L225 Difference]: With dead ends: 2520 [2024-11-11 20:25:36,896 INFO L226 Difference]: Without dead ends: 1941 [2024-11-11 20:25:36,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-11 20:25:36,900 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 4533 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4727 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 4387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:36,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4727 Valid, 1366 Invalid, 4387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-11 20:25:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2024-11-11 20:25:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1774. [2024-11-11 20:25:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1435 states have (on average 1.6766550522648083) internal successors, (2406), 1473 states have internal predecessors, (2406), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2024-11-11 20:25:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2965 transitions. [2024-11-11 20:25:36,978 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2965 transitions. Word has length 112 [2024-11-11 20:25:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:36,979 INFO L471 AbstractCegarLoop]: Abstraction has 1774 states and 2965 transitions. [2024-11-11 20:25:36,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-11 20:25:36,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2965 transitions. [2024-11-11 20:25:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-11 20:25:36,983 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:36,983 INFO L218 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] [2024-11-11 20:25:37,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-11 20:25:37,184 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 [2024-11-11 20:25:37,184 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:37,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1546981407, now seen corresponding path program 1 times [2024-11-11 20:25:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416643285] [2024-11-11 20:25:37,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-11 20:25:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-11 20:25:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 20:25:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:25:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 20:25:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:25:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-11 20:25:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-11-11 20:25:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-11 20:25:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-11 20:25:37,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:37,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416643285] [2024-11-11 20:25:37,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416643285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:37,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471188140] [2024-11-11 20:25:37,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:37,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:37,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:37,942 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) [2024-11-11 20:25:37,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-11 20:25:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:38,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 20:25:38,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-11 20:25:38,298 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:38,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471188140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:38,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2024-11-11 20:25:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299842362] [2024-11-11 20:25:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:38,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 20:25:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 20:25:38,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-11 20:25:38,301 INFO L87 Difference]: Start difference. First operand 1774 states and 2965 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-11 20:25:38,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:38,434 INFO L93 Difference]: Finished difference Result 4997 states and 8454 transitions. [2024-11-11 20:25:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 20:25:38,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2024-11-11 20:25:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:38,458 INFO L225 Difference]: With dead ends: 4997 [2024-11-11 20:25:38,458 INFO L226 Difference]: Without dead ends: 3378 [2024-11-11 20:25:38,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-11 20:25:38,470 INFO L435 NwaCegarLoop]: 1047 mSDtfsCounter, 987 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:38,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1996 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 20:25:38,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3378 states. [2024-11-11 20:25:38,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3378 to 3359. [2024-11-11 20:25:38,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 2714 states have (on average 1.6768607221812823) internal successors, (4551), 2781 states have internal predecessors, (4551), 515 states have call successors, (515), 123 states have call predecessors, (515), 129 states have return successors, (591), 484 states have call predecessors, (591), 509 states have call successors, (591) [2024-11-11 20:25:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 5657 transitions. [2024-11-11 20:25:38,690 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 5657 transitions. Word has length 133 [2024-11-11 20:25:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:38,690 INFO L471 AbstractCegarLoop]: Abstraction has 3359 states and 5657 transitions. [2024-11-11 20:25:38,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-11 20:25:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 5657 transitions. [2024-11-11 20:25:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-11 20:25:38,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:38,696 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:38,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-11 20:25:38,897 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 [2024-11-11 20:25:38,897 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:38,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1659953559, now seen corresponding path program 1 times [2024-11-11 20:25:38,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:38,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558654239] [2024-11-11 20:25:38,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:38,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-11 20:25:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 20:25:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:25:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 20:25:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:25:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-11-11 20:25:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-11 20:25:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 20:25:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:25:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 20:25:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:25:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-11-11 20:25:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-11-11 20:25:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-11-11 20:25:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:39,875 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-11 20:25:39,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558654239] [2024-11-11 20:25:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558654239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753250451] [2024-11-11 20:25:39,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:39,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:39,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:39,878 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) [2024-11-11 20:25:39,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-11 20:25:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:40,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:25:40,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-11 20:25:40,514 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 20:25:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753250451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 20:25:40,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 20:25:40,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-11 20:25:40,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839794662] [2024-11-11 20:25:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 20:25:40,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-11 20:25:40,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:40,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-11 20:25:40,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-11 20:25:40,516 INFO L87 Difference]: Start difference. First operand 3359 states and 5657 transitions. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-11 20:25:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:43,220 INFO L93 Difference]: Finished difference Result 10432 states and 17884 transitions. [2024-11-11 20:25:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-11 20:25:43,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 186 [2024-11-11 20:25:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:43,262 INFO L225 Difference]: With dead ends: 10432 [2024-11-11 20:25:43,262 INFO L226 Difference]: Without dead ends: 7227 [2024-11-11 20:25:43,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2024-11-11 20:25:43,280 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 2236 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 4305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:43,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 1476 Invalid, 4305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-11 20:25:43,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2024-11-11 20:25:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 5853. [2024-11-11 20:25:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 4681 states have (on average 1.6432386242255927) internal successors, (7692), 4769 states have internal predecessors, (7692), 928 states have call successors, (928), 208 states have call predecessors, (928), 243 states have return successors, (1276), 897 states have call predecessors, (1276), 918 states have call successors, (1276) [2024-11-11 20:25:43,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 9896 transitions. [2024-11-11 20:25:43,592 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 9896 transitions. Word has length 186 [2024-11-11 20:25:43,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:43,593 INFO L471 AbstractCegarLoop]: Abstraction has 5853 states and 9896 transitions. [2024-11-11 20:25:43,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 5 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-11 20:25:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 9896 transitions. [2024-11-11 20:25:43,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-11 20:25:43,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:43,603 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:43,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-11 20:25:43,803 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 [2024-11-11 20:25:43,803 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:25:43,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:25:43,804 INFO L85 PathProgramCache]: Analyzing trace with hash 274727908, now seen corresponding path program 1 times [2024-11-11 20:25:43,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:25:43,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281940314] [2024-11-11 20:25:43,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:43,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:25:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:43,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:25:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-11 20:25:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-11 20:25:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-11 20:25:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-11 20:25:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:25:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 20:25:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 20:25:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:25:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 20:25:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:25:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-11-11 20:25:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-11 20:25:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 20:25:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:25:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 20:25:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:25:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-11-11 20:25:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-11-11 20:25:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-11-11 20:25:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-11 20:25:44,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:25:44,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281940314] [2024-11-11 20:25:44,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281940314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:25:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485530194] [2024-11-11 20:25:44,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:25:44,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:25:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:25:44,743 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) [2024-11-11 20:25:44,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-11 20:25:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:25:45,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-11 20:25:45,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:25:45,340 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-11 20:25:45,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 20:25:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-11 20:25:45,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485530194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 20:25:45,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 20:25:45,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 18 [2024-11-11 20:25:45,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754285730] [2024-11-11 20:25:45,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 20:25:45,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-11 20:25:45,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:25:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-11 20:25:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-11 20:25:45,676 INFO L87 Difference]: Start difference. First operand 5853 states and 9896 transitions. Second operand has 18 states, 17 states have (on average 14.294117647058824) internal successors, (243), 13 states have internal predecessors, (243), 6 states have call successors, (53), 9 states have call predecessors, (53), 7 states have return successors, (49), 6 states have call predecessors, (49), 6 states have call successors, (49) [2024-11-11 20:25:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 20:25:58,692 INFO L93 Difference]: Finished difference Result 13875 states and 23690 transitions. [2024-11-11 20:25:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-11 20:25:58,693 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 14.294117647058824) internal successors, (243), 13 states have internal predecessors, (243), 6 states have call successors, (53), 9 states have call predecessors, (53), 7 states have return successors, (49), 6 states have call predecessors, (49), 6 states have call successors, (49) Word has length 187 [2024-11-11 20:25:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 20:25:58,748 INFO L225 Difference]: With dead ends: 13875 [2024-11-11 20:25:58,748 INFO L226 Difference]: Without dead ends: 7993 [2024-11-11 20:25:58,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 422 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=470, Invalid=1786, Unknown=0, NotChecked=0, Total=2256 [2024-11-11 20:25:58,847 INFO L435 NwaCegarLoop]: 536 mSDtfsCounter, 6288 mSDsluCounter, 5681 mSDsCounter, 0 mSdLazyCounter, 10869 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6342 SdHoareTripleChecker+Valid, 6217 SdHoareTripleChecker+Invalid, 12415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 10869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-11 20:25:58,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6342 Valid, 6217 Invalid, 12415 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1546 Valid, 10869 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-11 20:25:58,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7993 states. [2024-11-11 20:25:59,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7993 to 5514. [2024-11-11 20:25:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 4424 states have (on average 1.634493670886076) internal successors, (7231), 4497 states have internal predecessors, (7231), 864 states have call successors, (864), 195 states have call predecessors, (864), 225 states have return successors, (1170), 843 states have call predecessors, (1170), 854 states have call successors, (1170) [2024-11-11 20:25:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 9265 transitions. [2024-11-11 20:25:59,816 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 9265 transitions. Word has length 187 [2024-11-11 20:25:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 20:25:59,817 INFO L471 AbstractCegarLoop]: Abstraction has 5514 states and 9265 transitions. [2024-11-11 20:25:59,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 14.294117647058824) internal successors, (243), 13 states have internal predecessors, (243), 6 states have call successors, (53), 9 states have call predecessors, (53), 7 states have return successors, (49), 6 states have call predecessors, (49), 6 states have call successors, (49) [2024-11-11 20:25:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 9265 transitions. [2024-11-11 20:25:59,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-11 20:25:59,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 20:25:59,824 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 20:25:59,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-11 20:26:00,024 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 [2024-11-11 20:26:00,025 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 20:26:00,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 20:26:00,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1914540956, now seen corresponding path program 1 times [2024-11-11 20:26:00,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 20:26:00,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066032723] [2024-11-11 20:26:00,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:26:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 20:26:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-11 20:26:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-11 20:26:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-11 20:26:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:26:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:26:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-11 20:26:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-11 20:26:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-11 20:26:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 20:26:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:26:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 20:26:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:26:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-11-11 20:26:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-11-11 20:26:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-11 20:26:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-11 20:26:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-11 20:26:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-11 20:26:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-11-11 20:26:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-11-11 20:26:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-11-11 20:26:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-11 20:26:00,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 20:26:00,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066032723] [2024-11-11 20:26:00,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066032723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 20:26:00,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407047856] [2024-11-11 20:26:00,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 20:26:00,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 20:26:00,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 20:26:00,941 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) [2024-11-11 20:26:00,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-11 20:26:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 20:26:01,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 20:26:01,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 20:26:01,430 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-11 20:26:01,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 20:26:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-11 20:26:01,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407047856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 20:26:01,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 20:26:01,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2024-11-11 20:26:01,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440170050] [2024-11-11 20:26:01,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 20:26:01,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-11 20:26:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 20:26:01,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-11 20:26:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-11 20:26:01,680 INFO L87 Difference]: Start difference. First operand 5514 states and 9265 transitions. Second operand has 17 states, 16 states have (on average 10.25) internal successors, (164), 12 states have internal predecessors, (164), 7 states have call successors, (38), 9 states have call predecessors, (38), 6 states have return successors, (35), 8 states have call predecessors, (35), 7 states have call successors, (35)