./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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_spec1_product09.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 e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:57:57,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:57:57,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:57:57,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:57:57,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:57:57,693 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:57:57,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:57:57,694 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:57:57,695 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:57:57,696 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:57:57,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:57:57,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:57:57,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:57:57,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:57:57,698 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:57:57,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:57:57,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:57:57,699 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:57:57,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:57:57,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:57:57,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:57:57,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:57:57,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:57:57,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:57:57,702 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:57:57,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:57:57,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:57:57,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:57:57,703 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:57:57,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:57:57,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:57:57,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:57:57,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:57:57,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:57:57,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:57:57,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:57:57,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:57:57,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:57:57,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:57:57,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:57:57,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:57:57,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:57:57,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 [2024-11-18 13:57:57,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:57:57,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:57:57,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:57:57,995 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:57:57,996 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:57:57,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2024-11-18 13:57:59,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:57:59,860 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:57:59,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2024-11-18 13:57:59,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07fb2193/2be9274d8f1d4ad3958d7671cef299ca/FLAGe513d6c36 [2024-11-18 13:57:59,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07fb2193/2be9274d8f1d4ad3958d7671cef299ca [2024-11-18 13:57:59,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:57:59,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:57:59,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:57:59,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:57:59,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:57:59,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:57:59" (1/1) ... [2024-11-18 13:57:59,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10057e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:57:59, skipping insertion in model container [2024-11-18 13:57:59,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:57:59" (1/1) ... [2024-11-18 13:57:59,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:58:00,234 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2024-11-18 13:58:00,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:58:00,574 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:58:00,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [48] [2024-11-18 13:58:00,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [57] [2024-11-18 13:58:00,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [423] [2024-11-18 13:58:00,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [461] [2024-11-18 13:58:00,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [822] [2024-11-18 13:58:00,588 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1005] [2024-11-18 13:58:00,588 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1097] [2024-11-18 13:58:00,588 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1768] [2024-11-18 13:58:00,588 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3206] [2024-11-18 13:58:00,589 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3219] [2024-11-18 13:58:00,592 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2024-11-18 13:58:00,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:58:00,718 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:58:00,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00 WrapperNode [2024-11-18 13:58:00,719 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:58:00,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:58:00,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:58:00,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:58:00,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,806 INFO L138 Inliner]: procedures = 89, calls = 331, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 800 [2024-11-18 13:58:00,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:58:00,808 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:58:00,808 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:58:00,808 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:58:00,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,857 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 13:58:00,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,927 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:58:00,947 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:58:00,947 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:58:00,947 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:58:00,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (1/1) ... [2024-11-18 13:58:00,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:58:00,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:00,993 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) [2024-11-18 13:58:00,996 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 [2024-11-18 13:58:01,040 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-18 13:58:01,040 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-18 13:58:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:58:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-18 13:58:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-18 13:58:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 13:58:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 13:58:01,041 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 13:58:01,041 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 13:58:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 13:58:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 13:58:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 13:58:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 13:58:01,042 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 13:58:01,042 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 13:58:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-18 13:58:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-18 13:58:01,043 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 13:58:01,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 13:58:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 13:58:01,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 13:58:01,044 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 13:58:01,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 13:58:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 13:58:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 13:58:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 13:58:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 13:58:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 13:58:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 13:58:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 13:58:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 13:58:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 13:58:01,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 13:58:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 13:58:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 13:58:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 13:58:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 13:58:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 13:58:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 13:58:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 13:58:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 13:58:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 13:58:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 13:58:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 13:58:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 13:58:01,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 13:58:01,051 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 13:58:01,052 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 13:58:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 13:58:01,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 13:58:01,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:58:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:58:01,053 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 13:58:01,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 13:58:01,226 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:58:01,228 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:58:02,433 INFO L? ?]: Removed 421 outVars from TransFormulas that were not future-live. [2024-11-18 13:58:02,434 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:58:02,468 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:58:02,469 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:58:02,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:58:02 BoogieIcfgContainer [2024-11-18 13:58:02,469 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:58:02,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:58:02,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:58:02,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:58:02,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:57:59" (1/3) ... [2024-11-18 13:58:02,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed3cadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:58:02, skipping insertion in model container [2024-11-18 13:58:02,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:00" (2/3) ... [2024-11-18 13:58:02,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed3cadb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:58:02, skipping insertion in model container [2024-11-18 13:58:02,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:58:02" (3/3) ... [2024-11-18 13:58:02,483 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2024-11-18 13:58:02,500 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:58:02,501 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:58:02,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:58:02,602 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;@5da28748, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:58:02,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:58:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 533 states, 421 states have (on average 1.7125890736342042) internal successors, (721), 442 states have internal predecessors, (721), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2024-11-18 13:58:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 13:58:02,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:02,637 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:02,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:02,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:02,643 INFO L85 PathProgramCache]: Analyzing trace with hash 982774722, now seen corresponding path program 1 times [2024-11-18 13:58:02,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:02,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67307320] [2024-11-18 13:58:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:02,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:03,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67307320] [2024-11-18 13:58:03,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67307320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:03,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161520734] [2024-11-18 13:58:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:03,264 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) [2024-11-18 13:58:03,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:58:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:03,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 1758 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:58:03,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:58:03,764 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:03,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161520734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:03,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:03,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-18 13:58:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766547127] [2024-11-18 13:58:03,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:03,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:58:03,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:58:03,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:58:03,802 INFO L87 Difference]: Start difference. First operand has 533 states, 421 states have (on average 1.7125890736342042) internal successors, (721), 442 states have internal predecessors, (721), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 13:58:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:03,869 INFO L93 Difference]: Finished difference Result 554 states and 929 transitions. [2024-11-18 13:58:03,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:58:03,872 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2024-11-18 13:58:03,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:03,904 INFO L225 Difference]: With dead ends: 554 [2024-11-18 13:58:03,904 INFO L226 Difference]: Without dead ends: 525 [2024-11-18 13:58:03,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:58:03,914 INFO L432 NwaCegarLoop]: 890 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, 890 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 [2024-11-18 13:58:03,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-18 13:58:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2024-11-18 13:58:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 415 states have (on average 1.7108433734939759) internal successors, (710), 434 states have internal predecessors, (710), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 883 transitions. [2024-11-18 13:58:04,018 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 883 transitions. Word has length 97 [2024-11-18 13:58:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:04,020 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 883 transitions. [2024-11-18 13:58:04,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 13:58:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 883 transitions. [2024-11-18 13:58:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 13:58:04,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:04,026 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:04,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:58:04,226 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 [2024-11-18 13:58:04,227 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:04,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1445938826, now seen corresponding path program 1 times [2024-11-18 13:58:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:04,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297169442] [2024-11-18 13:58:04,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:04,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:04,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:04,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297169442] [2024-11-18 13:58:04,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297169442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:04,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326916557] [2024-11-18 13:58:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:04,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:04,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:04,470 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) [2024-11-18 13:58:04,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:58:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:04,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 1761 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:04,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:04,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:04,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326916557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:04,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:04,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904889602] [2024-11-18 13:58:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:04,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:04,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:04,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:04,956 INFO L87 Difference]: Start difference. First operand 525 states and 883 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), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:05,068 INFO L93 Difference]: Finished difference Result 1041 states and 1758 transitions. [2024-11-18 13:58:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:58:05,069 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), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2024-11-18 13:58:05,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:05,077 INFO L225 Difference]: With dead ends: 1041 [2024-11-18 13:58:05,078 INFO L226 Difference]: Without dead ends: 525 [2024-11-18 13:58:05,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:05,089 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 5 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:05,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2607 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-18 13:58:05,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2024-11-18 13:58:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 415 states have (on average 1.7084337349397591) internal successors, (709), 434 states have internal predecessors, (709), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 882 transitions. [2024-11-18 13:58:05,145 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 882 transitions. Word has length 99 [2024-11-18 13:58:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:05,147 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 882 transitions. [2024-11-18 13:58:05,148 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), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 882 transitions. [2024-11-18 13:58:05,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-18 13:58:05,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:05,153 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:05,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:05,354 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 [2024-11-18 13:58:05,354 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:05,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:05,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1862773666, now seen corresponding path program 1 times [2024-11-18 13:58:05,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:05,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422583584] [2024-11-18 13:58:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:05,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:05,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422583584] [2024-11-18 13:58:05,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422583584] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:05,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040947925] [2024-11-18 13:58:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:05,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:05,551 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) [2024-11-18 13:58:05,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:58:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:05,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 1763 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:05,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:05,970 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:05,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040947925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:05,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:05,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:05,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428513737] [2024-11-18 13:58:05,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:05,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:05,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:05,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:05,975 INFO L87 Difference]: Start difference. First operand 525 states and 882 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:06,054 INFO L93 Difference]: Finished difference Result 1041 states and 1756 transitions. [2024-11-18 13:58:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:58:06,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2024-11-18 13:58:06,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:06,060 INFO L225 Difference]: With dead ends: 1041 [2024-11-18 13:58:06,060 INFO L226 Difference]: Without dead ends: 525 [2024-11-18 13:58:06,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:06,066 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 4 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:06,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2607 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-18 13:58:06,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2024-11-18 13:58:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 415 states have (on average 1.7060240963855422) internal successors, (708), 434 states have internal predecessors, (708), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:06,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 881 transitions. [2024-11-18 13:58:06,101 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 881 transitions. Word has length 101 [2024-11-18 13:58:06,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:06,102 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 881 transitions. [2024-11-18 13:58:06,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 881 transitions. [2024-11-18 13:58:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-18 13:58:06,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:06,108 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:06,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:58:06,308 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 [2024-11-18 13:58:06,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:06,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash -42828106, now seen corresponding path program 1 times [2024-11-18 13:58:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:06,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422585354] [2024-11-18 13:58:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:06,506 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:06,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:06,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422585354] [2024-11-18 13:58:06,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422585354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:06,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462367638] [2024-11-18 13:58:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:06,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:06,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:06,511 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) [2024-11-18 13:58:06,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:58:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:06,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:06,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:06,913 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462367638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:06,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:06,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:06,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524821372] [2024-11-18 13:58:06,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:06,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:06,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:06,916 INFO L87 Difference]: Start difference. First operand 525 states and 881 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:07,005 INFO L93 Difference]: Finished difference Result 1048 states and 1763 transitions. [2024-11-18 13:58:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:07,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2024-11-18 13:58:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:07,011 INFO L225 Difference]: With dead ends: 1048 [2024-11-18 13:58:07,011 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 13:58:07,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:07,016 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 13 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:07,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2604 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 13:58:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-18 13:58:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.702127659574468) internal successors, (720), 442 states have internal predecessors, (720), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 893 transitions. [2024-11-18 13:58:07,044 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 893 transitions. Word has length 103 [2024-11-18 13:58:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:07,045 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 893 transitions. [2024-11-18 13:58:07,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 893 transitions. [2024-11-18 13:58:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-18 13:58:07,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:07,050 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:07,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:58:07,254 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 [2024-11-18 13:58:07,255 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:07,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash -980081325, now seen corresponding path program 1 times [2024-11-18 13:58:07,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:07,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4311462] [2024-11-18 13:58:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:07,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:07,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4311462] [2024-11-18 13:58:07,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4311462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:07,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667621486] [2024-11-18 13:58:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:07,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:07,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:07,422 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) [2024-11-18 13:58:07,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:58:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:07,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:07,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:07,818 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:07,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667621486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:07,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:07,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:07,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517734246] [2024-11-18 13:58:07,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:07,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:07,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:07,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:07,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:07,821 INFO L87 Difference]: Start difference. First operand 534 states and 893 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:07,890 INFO L93 Difference]: Finished difference Result 1050 states and 1764 transitions. [2024-11-18 13:58:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:07,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2024-11-18 13:58:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:07,895 INFO L225 Difference]: With dead ends: 1050 [2024-11-18 13:58:07,896 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 13:58:07,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:07,899 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 11 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:07,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2604 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:07,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 13:58:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-18 13:58:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.6997635933806146) internal successors, (719), 442 states have internal predecessors, (719), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 892 transitions. [2024-11-18 13:58:07,922 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 892 transitions. Word has length 104 [2024-11-18 13:58:07,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:07,922 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 892 transitions. [2024-11-18 13:58:07,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 892 transitions. [2024-11-18 13:58:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-18 13:58:07,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:07,926 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:07,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:08,127 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 [2024-11-18 13:58:08,127 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:08,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1511627174, now seen corresponding path program 1 times [2024-11-18 13:58:08,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:08,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496963237] [2024-11-18 13:58:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:08,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:08,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:08,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496963237] [2024-11-18 13:58:08,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496963237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:08,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866030145] [2024-11-18 13:58:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:08,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:08,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:08,256 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) [2024-11-18 13:58:08,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:58:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:08,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:08,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:08,643 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:08,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866030145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:08,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:08,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583168232] [2024-11-18 13:58:08,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:08,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:08,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:08,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:08,646 INFO L87 Difference]: Start difference. First operand 534 states and 892 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:08,708 INFO L93 Difference]: Finished difference Result 1050 states and 1763 transitions. [2024-11-18 13:58:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:08,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-11-18 13:58:08,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:08,714 INFO L225 Difference]: With dead ends: 1050 [2024-11-18 13:58:08,714 INFO L226 Difference]: Without dead ends: 534 [2024-11-18 13:58:08,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:08,717 INFO L432 NwaCegarLoop]: 870 mSDtfsCounter, 10 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:08,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2604 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-18 13:58:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2024-11-18 13:58:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.6973995271867612) internal successors, (718), 442 states have internal predecessors, (718), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 891 transitions. [2024-11-18 13:58:08,741 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 891 transitions. Word has length 105 [2024-11-18 13:58:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:08,741 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 891 transitions. [2024-11-18 13:58:08,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 891 transitions. [2024-11-18 13:58:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-18 13:58:08,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:08,745 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:08,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:58:08,946 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 [2024-11-18 13:58:08,946 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:08,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1943820855, now seen corresponding path program 1 times [2024-11-18 13:58:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:08,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678513355] [2024-11-18 13:58:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:08,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:09,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:09,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678513355] [2024-11-18 13:58:09,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678513355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:09,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404547297] [2024-11-18 13:58:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:09,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:09,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:09,132 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) [2024-11-18 13:58:09,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:58:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:09,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:09,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:09,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:58:09,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:09,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404547297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:09,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:09,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:58:09,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732946293] [2024-11-18 13:58:09,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:09,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:09,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:09,531 INFO L87 Difference]: Start difference. First operand 534 states and 891 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:09,675 INFO L93 Difference]: Finished difference Result 1076 states and 1810 transitions. [2024-11-18 13:58:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:58:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2024-11-18 13:58:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:09,682 INFO L225 Difference]: With dead ends: 1076 [2024-11-18 13:58:09,683 INFO L226 Difference]: Without dead ends: 549 [2024-11-18 13:58:09,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:09,686 INFO L432 NwaCegarLoop]: 845 mSDtfsCounter, 76 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:09,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2495 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:09,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-18 13:58:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 534. [2024-11-18 13:58:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.6855791962174942) internal successors, (713), 442 states have internal predecessors, (713), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 886 transitions. [2024-11-18 13:58:09,707 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 886 transitions. Word has length 106 [2024-11-18 13:58:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:09,708 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 886 transitions. [2024-11-18 13:58:09,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:09,708 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 886 transitions. [2024-11-18 13:58:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-18 13:58:09,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:09,711 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:09,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:58:09,912 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 [2024-11-18 13:58:09,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:09,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2079697887, now seen corresponding path program 1 times [2024-11-18 13:58:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617846129] [2024-11-18 13:58:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:10,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:10,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617846129] [2024-11-18 13:58:10,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617846129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:10,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811784056] [2024-11-18 13:58:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:10,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:10,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:10,136 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) [2024-11-18 13:58:10,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:58:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:10,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:10,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:10,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:58:10,514 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811784056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:10,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:10,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:58:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364461667] [2024-11-18 13:58:10,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:10,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:10,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:10,517 INFO L87 Difference]: Start difference. First operand 534 states and 886 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:10,650 INFO L93 Difference]: Finished difference Result 1076 states and 1800 transitions. [2024-11-18 13:58:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:58:10,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2024-11-18 13:58:10,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:10,658 INFO L225 Difference]: With dead ends: 1076 [2024-11-18 13:58:10,659 INFO L226 Difference]: Without dead ends: 549 [2024-11-18 13:58:10,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:10,663 INFO L432 NwaCegarLoop]: 845 mSDtfsCounter, 75 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:10,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2495 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-11-18 13:58:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 534. [2024-11-18 13:58:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.673758865248227) internal successors, (708), 442 states have internal predecessors, (708), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 881 transitions. [2024-11-18 13:58:10,685 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 881 transitions. Word has length 108 [2024-11-18 13:58:10,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:10,686 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 881 transitions. [2024-11-18 13:58:10,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:10,686 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 881 transitions. [2024-11-18 13:58:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-18 13:58:10,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:10,689 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:10,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:58:10,890 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 [2024-11-18 13:58:10,890 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:10,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:10,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1389502295, now seen corresponding path program 1 times [2024-11-18 13:58:10,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:10,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954810220] [2024-11-18 13:58:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954810220] [2024-11-18 13:58:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954810220] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488310091] [2024-11-18 13:58:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:11,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:11,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:11,115 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) [2024-11-18 13:58:11,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:58:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:11,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:11,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:58:11,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:11,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488310091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:11,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:11,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:58:11,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323918300] [2024-11-18 13:58:11,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:11,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:11,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:11,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:11,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:11,509 INFO L87 Difference]: Start difference. First operand 534 states and 881 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:11,698 INFO L93 Difference]: Finished difference Result 1127 states and 1873 transitions. [2024-11-18 13:58:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2024-11-18 13:58:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:11,704 INFO L225 Difference]: With dead ends: 1127 [2024-11-18 13:58:11,704 INFO L226 Difference]: Without dead ends: 615 [2024-11-18 13:58:11,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:11,708 INFO L432 NwaCegarLoop]: 878 mSDtfsCounter, 130 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:11,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2526 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:58:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-18 13:58:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 585. [2024-11-18 13:58:11,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 473 states have (on average 1.6765327695560253) internal successors, (793), 492 states have internal predecessors, (793), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 966 transitions. [2024-11-18 13:58:11,729 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 966 transitions. Word has length 110 [2024-11-18 13:58:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:11,729 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 966 transitions. [2024-11-18 13:58:11,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:11,730 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 966 transitions. [2024-11-18 13:58:11,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 13:58:11,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:11,732 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:11,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:58:11,933 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 [2024-11-18 13:58:11,933 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:11,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash -832829191, now seen corresponding path program 1 times [2024-11-18 13:58:11,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:11,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022529940] [2024-11-18 13:58:11,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022529940] [2024-11-18 13:58:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022529940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:12,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156277571] [2024-11-18 13:58:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:12,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:12,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:12,135 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) [2024-11-18 13:58:12,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:58:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:12,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:12,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:58:12,535 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:12,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156277571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:12,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:12,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:58:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899352151] [2024-11-18 13:58:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:12,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:12,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:12,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:12,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:12,538 INFO L87 Difference]: Start difference. First operand 585 states and 966 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:12,706 INFO L93 Difference]: Finished difference Result 1142 states and 1897 transitions. [2024-11-18 13:58:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2024-11-18 13:58:12,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:12,712 INFO L225 Difference]: With dead ends: 1142 [2024-11-18 13:58:12,712 INFO L226 Difference]: Without dead ends: 615 [2024-11-18 13:58:12,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:12,715 INFO L432 NwaCegarLoop]: 877 mSDtfsCounter, 124 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:12,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2499 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-18 13:58:12,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 585. [2024-11-18 13:58:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 473 states have (on average 1.6659619450317125) internal successors, (788), 492 states have internal predecessors, (788), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 13:58:12,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 961 transitions. [2024-11-18 13:58:12,736 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 961 transitions. Word has length 111 [2024-11-18 13:58:12,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:12,736 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 961 transitions. [2024-11-18 13:58:12,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 961 transitions. [2024-11-18 13:58:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 13:58:12,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:12,739 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:12,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 13:58:12,940 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 [2024-11-18 13:58:12,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:12,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash 850364280, now seen corresponding path program 1 times [2024-11-18 13:58:12,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:12,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282199976] [2024-11-18 13:58:12,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:12,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:13,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282199976] [2024-11-18 13:58:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282199976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212266786] [2024-11-18 13:58:13,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:13,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:13,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:13,151 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) [2024-11-18 13:58:13,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 13:58:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:13,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:58:13,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:58:13,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:13,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212266786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:13,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:13,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:58:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567846953] [2024-11-18 13:58:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:13,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:58:13,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:58:13,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:58:13,566 INFO L87 Difference]: Start difference. First operand 585 states and 961 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:13,715 INFO L93 Difference]: Finished difference Result 1135 states and 1877 transitions. [2024-11-18 13:58:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:58:13,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2024-11-18 13:58:13,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:13,721 INFO L225 Difference]: With dead ends: 1135 [2024-11-18 13:58:13,722 INFO L226 Difference]: Without dead ends: 623 [2024-11-18 13:58:13,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:58:13,724 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 113 mSDsluCounter, 5017 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5868 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:13,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5868 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-18 13:58:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 604. [2024-11-18 13:58:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 489 states have (on average 1.6646216768916156) internal successors, (814), 510 states have internal predecessors, (814), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2024-11-18 13:58:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 991 transitions. [2024-11-18 13:58:13,746 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 991 transitions. Word has length 111 [2024-11-18 13:58:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:13,748 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 991 transitions. [2024-11-18 13:58:13,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:13,748 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 991 transitions. [2024-11-18 13:58:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 13:58:13,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:13,752 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:13,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 13:58:13,952 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 [2024-11-18 13:58:13,952 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:13,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:13,953 INFO L85 PathProgramCache]: Analyzing trace with hash 40876823, now seen corresponding path program 1 times [2024-11-18 13:58:13,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:13,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584734693] [2024-11-18 13:58:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:13,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:14,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:14,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584734693] [2024-11-18 13:58:14,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584734693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:14,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78907248] [2024-11-18 13:58:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:14,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:14,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:14,056 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) [2024-11-18 13:58:14,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 13:58:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:14,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:58:14,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:14,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:14,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78907248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:14,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:14,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:58:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251628515] [2024-11-18 13:58:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:14,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:58:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:14,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:58:14,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:14,450 INFO L87 Difference]: Start difference. First operand 604 states and 991 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:14,543 INFO L93 Difference]: Finished difference Result 1073 states and 1777 transitions. [2024-11-18 13:58:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:58:14,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2024-11-18 13:58:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:14,549 INFO L225 Difference]: With dead ends: 1073 [2024-11-18 13:58:14,549 INFO L226 Difference]: Without dead ends: 628 [2024-11-18 13:58:14,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:14,554 INFO L432 NwaCegarLoop]: 864 mSDtfsCounter, 86 mSDsluCounter, 4241 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:14,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5105 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:14,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-18 13:58:14,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 623. [2024-11-18 13:58:14,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6633663366336633) internal successors, (840), 528 states have internal predecessors, (840), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-18 13:58:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1021 transitions. [2024-11-18 13:58:14,577 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1021 transitions. Word has length 111 [2024-11-18 13:58:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:14,577 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1021 transitions. [2024-11-18 13:58:14,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1021 transitions. [2024-11-18 13:58:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 13:58:14,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:14,581 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:14,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 13:58:14,781 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 [2024-11-18 13:58:14,782 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:14,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1236814252, now seen corresponding path program 1 times [2024-11-18 13:58:14,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:14,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733550755] [2024-11-18 13:58:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:14,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733550755] [2024-11-18 13:58:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733550755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:14,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367361867] [2024-11-18 13:58:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:14,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:14,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:14,889 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) [2024-11-18 13:58:14,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 13:58:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:15,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:58:15,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:15,281 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367361867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:15,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:58:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477659150] [2024-11-18 13:58:15,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:15,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:58:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:58:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:15,283 INFO L87 Difference]: Start difference. First operand 623 states and 1021 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:15,379 INFO L93 Difference]: Finished difference Result 1103 states and 1828 transitions. [2024-11-18 13:58:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:58:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-11-18 13:58:15,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:15,385 INFO L225 Difference]: With dead ends: 1103 [2024-11-18 13:58:15,385 INFO L226 Difference]: Without dead ends: 658 [2024-11-18 13:58:15,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:15,388 INFO L432 NwaCegarLoop]: 864 mSDtfsCounter, 95 mSDsluCounter, 4231 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5095 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:15,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5095 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:15,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-18 13:58:15,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 623. [2024-11-18 13:58:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6633663366336633) internal successors, (840), 528 states have internal predecessors, (840), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-18 13:58:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1021 transitions. [2024-11-18 13:58:15,409 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1021 transitions. Word has length 112 [2024-11-18 13:58:15,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:15,410 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1021 transitions. [2024-11-18 13:58:15,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1021 transitions. [2024-11-18 13:58:15,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 13:58:15,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:15,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:15,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:15,613 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 [2024-11-18 13:58:15,613 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:15,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1719949780, now seen corresponding path program 1 times [2024-11-18 13:58:15,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:15,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774685484] [2024-11-18 13:58:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:15,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:58:15,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:15,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774685484] [2024-11-18 13:58:15,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774685484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:15,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591363266] [2024-11-18 13:58:15,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:15,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:15,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:15,709 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) [2024-11-18 13:58:15,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 13:58:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:16,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:58:16,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:16,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591363266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:16,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:16,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:58:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702074715] [2024-11-18 13:58:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:16,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:58:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:58:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:16,125 INFO L87 Difference]: Start difference. First operand 623 states and 1021 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:16,275 INFO L93 Difference]: Finished difference Result 1088 states and 1802 transitions. [2024-11-18 13:58:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:58:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2024-11-18 13:58:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:16,281 INFO L225 Difference]: With dead ends: 1088 [2024-11-18 13:58:16,281 INFO L226 Difference]: Without dead ends: 643 [2024-11-18 13:58:16,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:58:16,284 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 113 mSDsluCounter, 5023 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5876 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:16,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5876 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2024-11-18 13:58:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 623. [2024-11-18 13:58:16,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6633663366336633) internal successors, (840), 528 states have internal predecessors, (840), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-18 13:58:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1021 transitions. [2024-11-18 13:58:16,303 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1021 transitions. Word has length 112 [2024-11-18 13:58:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:16,304 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1021 transitions. [2024-11-18 13:58:16,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1021 transitions. [2024-11-18 13:58:16,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 13:58:16,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:16,307 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:16,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 13:58:16,507 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 [2024-11-18 13:58:16,508 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:16,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:16,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1785667008, now seen corresponding path program 1 times [2024-11-18 13:58:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:16,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2924938] [2024-11-18 13:58:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:16,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:16,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2924938] [2024-11-18 13:58:16,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2924938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:16,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107909963] [2024-11-18 13:58:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:16,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:16,593 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) [2024-11-18 13:58:16,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 13:58:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:16,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:16,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:58:16,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107909963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270319603] [2024-11-18 13:58:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:16,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:16,922 INFO L87 Difference]: Start difference. First operand 623 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:16,989 INFO L93 Difference]: Finished difference Result 1140 states and 1887 transitions. [2024-11-18 13:58:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:16,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2024-11-18 13:58:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:16,994 INFO L225 Difference]: With dead ends: 1140 [2024-11-18 13:58:16,995 INFO L226 Difference]: Without dead ends: 623 [2024-11-18 13:58:16,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:16,999 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 13 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:17,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2573 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:17,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-18 13:58:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2024-11-18 13:58:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6554455445544554) internal successors, (836), 528 states have internal predecessors, (836), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-18 13:58:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1017 transitions. [2024-11-18 13:58:17,026 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1017 transitions. Word has length 112 [2024-11-18 13:58:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:17,027 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1017 transitions. [2024-11-18 13:58:17,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1017 transitions. [2024-11-18 13:58:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-18 13:58:17,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:17,031 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:17,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:17,231 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 [2024-11-18 13:58:17,232 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:17,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:17,232 INFO L85 PathProgramCache]: Analyzing trace with hash -2086538545, now seen corresponding path program 1 times [2024-11-18 13:58:17,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:17,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325495831] [2024-11-18 13:58:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:17,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:58:17,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325495831] [2024-11-18 13:58:17,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325495831] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:17,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949470251] [2024-11-18 13:58:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:17,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:17,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:17,383 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) [2024-11-18 13:58:17,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 13:58:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:17,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:58:17,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:17,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:17,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949470251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:17,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:17,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:58:17,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310274667] [2024-11-18 13:58:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:17,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:58:17,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:58:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:17,794 INFO L87 Difference]: Start difference. First operand 623 states and 1017 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:17,927 INFO L93 Difference]: Finished difference Result 1088 states and 1799 transitions. [2024-11-18 13:58:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:58:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 113 [2024-11-18 13:58:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:17,933 INFO L225 Difference]: With dead ends: 1088 [2024-11-18 13:58:17,933 INFO L226 Difference]: Without dead ends: 643 [2024-11-18 13:58:17,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:58:17,936 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 121 mSDsluCounter, 4985 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 5832 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:17,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 5832 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2024-11-18 13:58:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 623. [2024-11-18 13:58:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6554455445544554) internal successors, (836), 528 states have internal predecessors, (836), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-18 13:58:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1017 transitions. [2024-11-18 13:58:17,957 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1017 transitions. Word has length 113 [2024-11-18 13:58:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:17,958 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 1017 transitions. [2024-11-18 13:58:17,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1017 transitions. [2024-11-18 13:58:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 13:58:17,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:17,961 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:17,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 13:58:18,161 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 [2024-11-18 13:58:18,161 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:18,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1393892143, now seen corresponding path program 1 times [2024-11-18 13:58:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369011442] [2024-11-18 13:58:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:58:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369011442] [2024-11-18 13:58:18,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369011442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050456549] [2024-11-18 13:58:18,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:18,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:18,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:18,283 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) [2024-11-18 13:58:18,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 13:58:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:18,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:58:18,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:58:18,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050456549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:18,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:18,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:18,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633964287] [2024-11-18 13:58:18,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:18,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:18,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:18,676 INFO L87 Difference]: Start difference. First operand 623 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:18,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:18,731 INFO L93 Difference]: Finished difference Result 1184 states and 1955 transitions. [2024-11-18 13:58:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:58:18,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2024-11-18 13:58:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:18,735 INFO L225 Difference]: With dead ends: 1184 [2024-11-18 13:58:18,736 INFO L226 Difference]: Without dead ends: 647 [2024-11-18 13:58:18,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:18,738 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 6 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:18,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2546 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2024-11-18 13:58:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2024-11-18 13:58:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 529 states have (on average 1.6332703213610587) internal successors, (864), 552 states have internal predecessors, (864), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-18 13:58:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1045 transitions. [2024-11-18 13:58:18,757 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1045 transitions. Word has length 114 [2024-11-18 13:58:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:18,757 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 1045 transitions. [2024-11-18 13:58:18,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1045 transitions. [2024-11-18 13:58:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-18 13:58:18,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:18,762 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:18,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 13:58:18,962 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 [2024-11-18 13:58:18,963 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:18,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1389262341, now seen corresponding path program 1 times [2024-11-18 13:58:18,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:18,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854875124] [2024-11-18 13:58:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:18,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:19,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854875124] [2024-11-18 13:58:19,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854875124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:19,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46427970] [2024-11-18 13:58:19,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:19,062 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) [2024-11-18 13:58:19,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 13:58:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:19,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:58:19,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:58:19,426 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:19,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46427970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:19,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:19,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:58:19,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583869827] [2024-11-18 13:58:19,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:19,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:19,428 INFO L87 Difference]: Start difference. First operand 647 states and 1045 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:19,452 INFO L93 Difference]: Finished difference Result 1089 states and 1794 transitions. [2024-11-18 13:58:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:58:19,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2024-11-18 13:58:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:19,457 INFO L225 Difference]: With dead ends: 1089 [2024-11-18 13:58:19,457 INFO L226 Difference]: Without dead ends: 649 [2024-11-18 13:58:19,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:58:19,460 INFO L432 NwaCegarLoop]: 867 mSDtfsCounter, 0 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:19,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2595 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-18 13:58:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2024-11-18 13:58:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 531 states have (on average 1.630885122410546) internal successors, (866), 554 states have internal predecessors, (866), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2024-11-18 13:58:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1047 transitions. [2024-11-18 13:58:19,480 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1047 transitions. Word has length 114 [2024-11-18 13:58:19,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:19,481 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 1047 transitions. [2024-11-18 13:58:19,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1047 transitions. [2024-11-18 13:58:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-18 13:58:19,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:19,484 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:19,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:19,684 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 [2024-11-18 13:58:19,685 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:19,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1321982348, now seen corresponding path program 1 times [2024-11-18 13:58:19,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:19,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945717503] [2024-11-18 13:58:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945717503] [2024-11-18 13:58:19,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945717503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:19,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30755374] [2024-11-18 13:58:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:19,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:19,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:19,799 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) [2024-11-18 13:58:19,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 13:58:20,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:20,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:58:20,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 13:58:20,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:20,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30755374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:20,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:20,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2024-11-18 13:58:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270883545] [2024-11-18 13:58:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:20,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 13:58:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:20,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 13:58:20,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:58:20,311 INFO L87 Difference]: Start difference. First operand 649 states and 1047 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-18 13:58:23,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:23,481 INFO L93 Difference]: Finished difference Result 1773 states and 2956 transitions. [2024-11-18 13:58:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:58:23,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 117 [2024-11-18 13:58:23,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:23,490 INFO L225 Difference]: With dead ends: 1773 [2024-11-18 13:58:23,490 INFO L226 Difference]: Without dead ends: 1331 [2024-11-18 13:58:23,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:58:23,493 INFO L432 NwaCegarLoop]: 951 mSDtfsCounter, 2836 mSDsluCounter, 3286 mSDsCounter, 0 mSdLazyCounter, 5300 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2958 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 5300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:23,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2958 Valid, 4237 Invalid, 5888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 5300 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 13:58:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-11-18 13:58:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1312. [2024-11-18 13:58:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1042 states have (on average 1.6343570057581573) internal successors, (1703), 1089 states have internal predecessors, (1703), 214 states have call successors, (214), 42 states have call predecessors, (214), 55 states have return successors, (247), 211 states have call predecessors, (247), 209 states have call successors, (247) [2024-11-18 13:58:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2164 transitions. [2024-11-18 13:58:23,541 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2164 transitions. Word has length 117 [2024-11-18 13:58:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:23,541 INFO L471 AbstractCegarLoop]: Abstraction has 1312 states and 2164 transitions. [2024-11-18 13:58:23,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-18 13:58:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2164 transitions. [2024-11-18 13:58:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 13:58:23,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:23,547 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:23,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:23,748 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 [2024-11-18 13:58:23,748 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:23,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 539000053, now seen corresponding path program 1 times [2024-11-18 13:58:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864909485] [2024-11-18 13:58:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:58:23,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:23,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864909485] [2024-11-18 13:58:23,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864909485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:23,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364301870] [2024-11-18 13:58:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:23,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:23,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:23,845 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) [2024-11-18 13:58:23,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 13:58:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:24,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:58:24,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:58:24,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364301870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:24,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:24,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-18 13:58:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927767192] [2024-11-18 13:58:24,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:24,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:58:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:58:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:24,300 INFO L87 Difference]: Start difference. First operand 1312 states and 2164 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:24,695 INFO L93 Difference]: Finished difference Result 3251 states and 5504 transitions. [2024-11-18 13:58:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:58:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2024-11-18 13:58:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:24,717 INFO L225 Difference]: With dead ends: 3251 [2024-11-18 13:58:24,718 INFO L226 Difference]: Without dead ends: 2258 [2024-11-18 13:58:24,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:58:24,726 INFO L432 NwaCegarLoop]: 1344 mSDtfsCounter, 709 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 4713 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:24,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 4713 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:58:24,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2024-11-18 13:58:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2239. [2024-11-18 13:58:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 1751 states have (on average 1.6436322101656196) internal successors, (2878), 1832 states have internal predecessors, (2878), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2024-11-18 13:58:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 3735 transitions. [2024-11-18 13:58:24,833 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 3735 transitions. Word has length 118 [2024-11-18 13:58:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:24,834 INFO L471 AbstractCegarLoop]: Abstraction has 2239 states and 3735 transitions. [2024-11-18 13:58:24,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 3735 transitions. [2024-11-18 13:58:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 13:58:24,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:24,844 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:24,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-18 13:58:25,045 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 [2024-11-18 13:58:25,045 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:25,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1702608958, now seen corresponding path program 1 times [2024-11-18 13:58:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:25,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651882918] [2024-11-18 13:58:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651882918] [2024-11-18 13:58:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651882918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318355835] [2024-11-18 13:58:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:25,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:25,275 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) [2024-11-18 13:58:25,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 13:58:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:25,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:58:25,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:58:25,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318355835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:25,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:58:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570966008] [2024-11-18 13:58:25,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:25,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:25,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:25,628 INFO L87 Difference]: Start difference. First operand 2239 states and 3735 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:25,722 INFO L93 Difference]: Finished difference Result 4316 states and 7251 transitions. [2024-11-18 13:58:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:58:25,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 120 [2024-11-18 13:58:25,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:25,743 INFO L225 Difference]: With dead ends: 4316 [2024-11-18 13:58:25,744 INFO L226 Difference]: Without dead ends: 2275 [2024-11-18 13:58:25,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:25,758 INFO L432 NwaCegarLoop]: 852 mSDtfsCounter, 5 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:25,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2545 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:25,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2024-11-18 13:58:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2257. [2024-11-18 13:58:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 1769 states have (on average 1.6438665912945167) internal successors, (2908), 1850 states have internal predecessors, (2908), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2024-11-18 13:58:25,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3765 transitions. [2024-11-18 13:58:25,854 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3765 transitions. Word has length 120 [2024-11-18 13:58:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:25,855 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3765 transitions. [2024-11-18 13:58:25,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-18 13:58:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3765 transitions. [2024-11-18 13:58:25,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-18 13:58:25,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:25,864 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:25,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:26,064 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 [2024-11-18 13:58:26,065 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:26,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:26,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1374141510, now seen corresponding path program 1 times [2024-11-18 13:58:26,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:26,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170020468] [2024-11-18 13:58:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170020468] [2024-11-18 13:58:26,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170020468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:26,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223520687] [2024-11-18 13:58:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:26,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:26,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:26,215 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) [2024-11-18 13:58:26,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 13:58:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:26,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 13:58:26,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:26,628 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:26,629 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:26,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223520687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:26,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:26,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:58:26,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769609276] [2024-11-18 13:58:26,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:26,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:58:26,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:26,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:58:26,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:58:26,631 INFO L87 Difference]: Start difference. First operand 2257 states and 3765 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:26,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:26,791 INFO L93 Difference]: Finished difference Result 4258 states and 7146 transitions. [2024-11-18 13:58:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:58:26,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2024-11-18 13:58:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:26,808 INFO L225 Difference]: With dead ends: 4258 [2024-11-18 13:58:26,809 INFO L226 Difference]: Without dead ends: 2327 [2024-11-18 13:58:26,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:58:26,822 INFO L432 NwaCegarLoop]: 847 mSDtfsCounter, 89 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5853 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:26,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5853 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2024-11-18 13:58:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2260. [2024-11-18 13:58:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1771 states have (on average 1.64257481648786) internal successors, (2909), 1853 states have internal predecessors, (2909), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-18 13:58:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3767 transitions. [2024-11-18 13:58:26,909 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3767 transitions. Word has length 121 [2024-11-18 13:58:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:26,909 INFO L471 AbstractCegarLoop]: Abstraction has 2260 states and 3767 transitions. [2024-11-18 13:58:26,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 13:58:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3767 transitions. [2024-11-18 13:58:26,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-18 13:58:26,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:26,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:26,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 13:58:27,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:27,119 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:27,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:27,119 INFO L85 PathProgramCache]: Analyzing trace with hash 787282620, now seen corresponding path program 1 times [2024-11-18 13:58:27,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:27,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508466410] [2024-11-18 13:58:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508466410] [2024-11-18 13:58:27,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508466410] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167249310] [2024-11-18 13:58:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:27,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:27,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:27,281 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:27,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 13:58:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:27,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:58:27,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:58:27,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:27,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167249310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:27,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:27,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-18 13:58:27,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047187161] [2024-11-18 13:58:27,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:27,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:58:27,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:27,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:58:27,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:27,816 INFO L87 Difference]: Start difference. First operand 2260 states and 3767 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 13:58:28,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:28,245 INFO L93 Difference]: Finished difference Result 2473 states and 4121 transitions. [2024-11-18 13:58:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:28,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 121 [2024-11-18 13:58:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:28,265 INFO L225 Difference]: With dead ends: 2473 [2024-11-18 13:58:28,265 INFO L226 Difference]: Without dead ends: 2456 [2024-11-18 13:58:28,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:28,269 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 851 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:28,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2237 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:58:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2024-11-18 13:58:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2278. [2024-11-18 13:58:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1789 states have (on average 1.636109558412521) internal successors, (2927), 1871 states have internal predecessors, (2927), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-18 13:58:28,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3785 transitions. [2024-11-18 13:58:28,366 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3785 transitions. Word has length 121 [2024-11-18 13:58:28,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:28,367 INFO L471 AbstractCegarLoop]: Abstraction has 2278 states and 3785 transitions. [2024-11-18 13:58:28,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-18 13:58:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3785 transitions. [2024-11-18 13:58:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-18 13:58:28,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:28,378 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:28,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:28,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:28,578 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:28,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1955872855, now seen corresponding path program 1 times [2024-11-18 13:58:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501373059] [2024-11-18 13:58:28,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:28,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:58:28,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501373059] [2024-11-18 13:58:28,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501373059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998028890] [2024-11-18 13:58:28,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:28,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:28,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:28,791 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:28,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 13:58:29,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:29,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:58:29,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-18 13:58:29,195 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998028890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:29,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:29,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-18 13:58:29,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174322809] [2024-11-18 13:58:29,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:29,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:58:29,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:58:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:29,198 INFO L87 Difference]: Start difference. First operand 2278 states and 3785 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 13:58:29,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:29,278 INFO L93 Difference]: Finished difference Result 2295 states and 3805 transitions. [2024-11-18 13:58:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:29,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2024-11-18 13:58:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:29,300 INFO L225 Difference]: With dead ends: 2295 [2024-11-18 13:58:29,300 INFO L226 Difference]: Without dead ends: 2278 [2024-11-18 13:58:29,304 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:58:29,305 INFO L432 NwaCegarLoop]: 866 mSDtfsCounter, 0 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3460 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:29,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3460 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:29,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2024-11-18 13:58:29,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2278. [2024-11-18 13:58:29,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1789 states have (on average 1.6327557294577977) internal successors, (2921), 1871 states have internal predecessors, (2921), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-18 13:58:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3779 transitions. [2024-11-18 13:58:29,394 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3779 transitions. Word has length 127 [2024-11-18 13:58:29,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:29,394 INFO L471 AbstractCegarLoop]: Abstraction has 2278 states and 3779 transitions. [2024-11-18 13:58:29,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-18 13:58:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3779 transitions. [2024-11-18 13:58:29,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 13:58:29,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:29,405 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:29,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:29,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:29,606 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:29,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1378411105, now seen corresponding path program 1 times [2024-11-18 13:58:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:29,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830459399] [2024-11-18 13:58:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:58:29,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:29,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830459399] [2024-11-18 13:58:29,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830459399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:29,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066131026] [2024-11-18 13:58:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:29,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:29,830 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:29,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 13:58:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:30,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 13:58:30,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:30,230 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:58:30,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:30,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066131026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:30,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:30,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-18 13:58:30,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546967001] [2024-11-18 13:58:30,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:30,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:58:30,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:58:30,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:30,232 INFO L87 Difference]: Start difference. First operand 2278 states and 3779 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:58:30,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:30,407 INFO L93 Difference]: Finished difference Result 4411 states and 7351 transitions. [2024-11-18 13:58:30,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:58:30,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 138 [2024-11-18 13:58:30,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:30,428 INFO L225 Difference]: With dead ends: 4411 [2024-11-18 13:58:30,429 INFO L226 Difference]: Without dead ends: 2358 [2024-11-18 13:58:30,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:58:30,441 INFO L432 NwaCegarLoop]: 857 mSDtfsCounter, 119 mSDsluCounter, 4183 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5040 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:30,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5040 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:30,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2024-11-18 13:58:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2278. [2024-11-18 13:58:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1789 states have (on average 1.6327557294577977) internal successors, (2921), 1871 states have internal predecessors, (2921), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2024-11-18 13:58:30,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3779 transitions. [2024-11-18 13:58:30,520 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3779 transitions. Word has length 138 [2024-11-18 13:58:30,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:30,520 INFO L471 AbstractCegarLoop]: Abstraction has 2278 states and 3779 transitions. [2024-11-18 13:58:30,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:58:30,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3779 transitions. [2024-11-18 13:58:30,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 13:58:30,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:30,532 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:30,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-18 13:58:30,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 13:58:30,733 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:30,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -875173478, now seen corresponding path program 1 times [2024-11-18 13:58:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:30,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653226963] [2024-11-18 13:58:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:58:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653226963] [2024-11-18 13:58:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653226963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059578709] [2024-11-18 13:58:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:30,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:30,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:30,825 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:30,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 13:58:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:31,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:58:31,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:58:31,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:31,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059578709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:31,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:31,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 13:58:31,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083409518] [2024-11-18 13:58:31,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:31,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:31,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:58:31,198 INFO L87 Difference]: Start difference. First operand 2278 states and 3779 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:58:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:31,293 INFO L93 Difference]: Finished difference Result 4418 states and 7360 transitions. [2024-11-18 13:58:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2024-11-18 13:58:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:31,313 INFO L225 Difference]: With dead ends: 4418 [2024-11-18 13:58:31,313 INFO L226 Difference]: Without dead ends: 2108 [2024-11-18 13:58:31,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:58:31,324 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 7 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:31,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2573 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:31,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2024-11-18 13:58:31,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2108. [2024-11-18 13:58:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1634 states have (on average 1.6401468788249693) internal successors, (2680), 1710 states have internal predecessors, (2680), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-11-18 13:58:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3519 transitions. [2024-11-18 13:58:31,459 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3519 transitions. Word has length 138 [2024-11-18 13:58:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:31,459 INFO L471 AbstractCegarLoop]: Abstraction has 2108 states and 3519 transitions. [2024-11-18 13:58:31,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:58:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3519 transitions. [2024-11-18 13:58:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 13:58:31,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:31,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:31,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-18 13:58:31,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 13:58:31,669 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:31,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1571524186, now seen corresponding path program 1 times [2024-11-18 13:58:31,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:31,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742750588] [2024-11-18 13:58:31,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:31,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:58:31,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:31,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742750588] [2024-11-18 13:58:31,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742750588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:31,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084064749] [2024-11-18 13:58:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:31,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:31,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:31,798 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:31,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-18 13:58:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:32,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:32,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:32,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:58:32,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:32,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084064749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:32,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:32,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 13:58:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575503256] [2024-11-18 13:58:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:32,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:32,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:58:32,203 INFO L87 Difference]: Start difference. First operand 2108 states and 3519 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:58:32,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:32,340 INFO L93 Difference]: Finished difference Result 4218 states and 7051 transitions. [2024-11-18 13:58:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:32,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 140 [2024-11-18 13:58:32,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:32,358 INFO L225 Difference]: With dead ends: 4218 [2024-11-18 13:58:32,358 INFO L226 Difference]: Without dead ends: 2141 [2024-11-18 13:58:32,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:32,367 INFO L432 NwaCegarLoop]: 843 mSDtfsCounter, 128 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:32,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2452 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2024-11-18 13:58:32,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2108. [2024-11-18 13:58:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1634 states have (on average 1.6395348837209303) internal successors, (2679), 1710 states have internal predecessors, (2679), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-11-18 13:58:32,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3518 transitions. [2024-11-18 13:58:32,446 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3518 transitions. Word has length 140 [2024-11-18 13:58:32,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:32,448 INFO L471 AbstractCegarLoop]: Abstraction has 2108 states and 3518 transitions. [2024-11-18 13:58:32,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:58:32,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3518 transitions. [2024-11-18 13:58:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 13:58:32,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:32,457 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:32,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-18 13:58:32,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 13:58:32,658 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:32,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash -966058518, now seen corresponding path program 1 times [2024-11-18 13:58:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:32,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861305023] [2024-11-18 13:58:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:32,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:58:32,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:32,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861305023] [2024-11-18 13:58:32,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861305023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:32,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:32,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:58:32,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370754897] [2024-11-18 13:58:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:32,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:58:32,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:58:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:32,839 INFO L87 Difference]: Start difference. First operand 2108 states and 3518 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:58:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:32,931 INFO L93 Difference]: Finished difference Result 2997 states and 4999 transitions. [2024-11-18 13:58:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:58:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 141 [2024-11-18 13:58:32,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:32,946 INFO L225 Difference]: With dead ends: 2997 [2024-11-18 13:58:32,947 INFO L226 Difference]: Without dead ends: 2143 [2024-11-18 13:58:32,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:58:32,951 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 115 mSDsluCounter, 4178 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 5034 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:32,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 5034 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:32,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2024-11-18 13:58:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2108. [2024-11-18 13:58:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1634 states have (on average 1.6395348837209303) internal successors, (2679), 1710 states have internal predecessors, (2679), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2024-11-18 13:58:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3518 transitions. [2024-11-18 13:58:33,032 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3518 transitions. Word has length 141 [2024-11-18 13:58:33,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:33,032 INFO L471 AbstractCegarLoop]: Abstraction has 2108 states and 3518 transitions. [2024-11-18 13:58:33,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 13:58:33,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3518 transitions. [2024-11-18 13:58:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 13:58:33,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:33,039 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:33,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-18 13:58:33,040 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:33,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:33,040 INFO L85 PathProgramCache]: Analyzing trace with hash 115975813, now seen corresponding path program 1 times [2024-11-18 13:58:33,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:33,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968083956] [2024-11-18 13:58:33,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:33,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:58:33,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:33,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968083956] [2024-11-18 13:58:33,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968083956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:33,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:33,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:58:33,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073606747] [2024-11-18 13:58:33,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:33,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:33,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:33,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:58:33,134 INFO L87 Difference]: Start difference. First operand 2108 states and 3518 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:58:33,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:33,195 INFO L93 Difference]: Finished difference Result 3046 states and 5081 transitions. [2024-11-18 13:58:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:33,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 141 [2024-11-18 13:58:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:33,202 INFO L225 Difference]: With dead ends: 3046 [2024-11-18 13:58:33,202 INFO L226 Difference]: Without dead ends: 953 [2024-11-18 13:58:33,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:58:33,209 INFO L432 NwaCegarLoop]: 858 mSDtfsCounter, 8 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:33,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2570 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2024-11-18 13:58:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 953. [2024-11-18 13:58:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 953 states, 755 states have (on average 1.633112582781457) internal successors, (1233), 788 states have internal predecessors, (1233), 158 states have call successors, (158), 40 states have call predecessors, (158), 39 states have return successors, (162), 150 states have call predecessors, (162), 153 states have call successors, (162) [2024-11-18 13:58:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1553 transitions. [2024-11-18 13:58:33,241 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1553 transitions. Word has length 141 [2024-11-18 13:58:33,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:33,241 INFO L471 AbstractCegarLoop]: Abstraction has 953 states and 1553 transitions. [2024-11-18 13:58:33,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-18 13:58:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1553 transitions. [2024-11-18 13:58:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-18 13:58:33,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:33,245 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:33,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 13:58:33,245 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:33,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:33,245 INFO L85 PathProgramCache]: Analyzing trace with hash 463945757, now seen corresponding path program 1 times [2024-11-18 13:58:33,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:33,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111327247] [2024-11-18 13:58:33,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:33,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:58:33,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:33,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111327247] [2024-11-18 13:58:33,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111327247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:33,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:33,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:58:33,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098976384] [2024-11-18 13:58:33,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:33,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:58:33,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:58:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:33,492 INFO L87 Difference]: Start difference. First operand 953 states and 1553 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:58:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:35,522 INFO L93 Difference]: Finished difference Result 3119 states and 5225 transitions. [2024-11-18 13:58:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 13:58:35,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 142 [2024-11-18 13:58:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:35,536 INFO L225 Difference]: With dead ends: 3119 [2024-11-18 13:58:35,536 INFO L226 Difference]: Without dead ends: 2270 [2024-11-18 13:58:35,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:58:35,541 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 2309 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 4003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:35,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 1919 Invalid, 4003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 13:58:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2024-11-18 13:58:35,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2123. [2024-11-18 13:58:35,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 1681 states have (on average 1.6585365853658536) internal successors, (2788), 1753 states have internal predecessors, (2788), 350 states have call successors, (350), 82 states have call predecessors, (350), 91 states have return successors, (392), 337 states have call predecessors, (392), 345 states have call successors, (392) [2024-11-18 13:58:35,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3530 transitions. [2024-11-18 13:58:35,667 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3530 transitions. Word has length 142 [2024-11-18 13:58:35,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:35,667 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3530 transitions. [2024-11-18 13:58:35,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-18 13:58:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3530 transitions. [2024-11-18 13:58:35,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 13:58:35,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:35,671 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:35,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 13:58:35,671 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:35,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:35,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1139518503, now seen corresponding path program 1 times [2024-11-18 13:58:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:35,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123152726] [2024-11-18 13:58:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:35,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:35,806 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:58:35,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:35,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123152726] [2024-11-18 13:58:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123152726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:35,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:35,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:58:35,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601847413] [2024-11-18 13:58:35,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:35,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:58:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:58:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:58:35,809 INFO L87 Difference]: Start difference. First operand 2123 states and 3530 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:58:35,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:35,906 INFO L93 Difference]: Finished difference Result 4167 states and 6987 transitions. [2024-11-18 13:58:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:35,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 147 [2024-11-18 13:58:35,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:35,919 INFO L225 Difference]: With dead ends: 4167 [2024-11-18 13:58:35,919 INFO L226 Difference]: Without dead ends: 2148 [2024-11-18 13:58:35,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:58:35,927 INFO L432 NwaCegarLoop]: 825 mSDtfsCounter, 0 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:35,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3270 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2024-11-18 13:58:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2142. [2024-11-18 13:58:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1696 states have (on average 1.6521226415094339) internal successors, (2802), 1767 states have internal predecessors, (2802), 349 states have call successors, (349), 82 states have call predecessors, (349), 96 states have return successors, (406), 342 states have call predecessors, (406), 344 states have call successors, (406) [2024-11-18 13:58:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 3557 transitions. [2024-11-18 13:58:36,007 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 3557 transitions. Word has length 147 [2024-11-18 13:58:36,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:36,008 INFO L471 AbstractCegarLoop]: Abstraction has 2142 states and 3557 transitions. [2024-11-18 13:58:36,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-18 13:58:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 3557 transitions. [2024-11-18 13:58:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-18 13:58:36,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:36,012 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:36,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 13:58:36,012 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:36,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:36,013 INFO L85 PathProgramCache]: Analyzing trace with hash 888927503, now seen corresponding path program 1 times [2024-11-18 13:58:36,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:36,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086917037] [2024-11-18 13:58:36,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:36,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:58:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:36,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086917037] [2024-11-18 13:58:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086917037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:36,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:36,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 13:58:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587547131] [2024-11-18 13:58:36,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:36,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:58:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:58:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:58:36,239 INFO L87 Difference]: Start difference. First operand 2142 states and 3557 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-18 13:58:38,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:38,312 INFO L93 Difference]: Finished difference Result 6906 states and 11664 transitions. [2024-11-18 13:58:38,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:58:38,313 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 151 [2024-11-18 13:58:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:38,343 INFO L225 Difference]: With dead ends: 6906 [2024-11-18 13:58:38,344 INFO L226 Difference]: Without dead ends: 4863 [2024-11-18 13:58:38,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:38,355 INFO L432 NwaCegarLoop]: 599 mSDtfsCounter, 3211 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 4054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:38,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 1752 Invalid, 4054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 13:58:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2024-11-18 13:58:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 4764. [2024-11-18 13:58:38,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4764 states, 3733 states have (on average 1.65148673988749) internal successors, (6165), 3896 states have internal predecessors, (6165), 816 states have call successors, (816), 182 states have call predecessors, (816), 214 states have return successors, (1005), 807 states have call predecessors, (1005), 811 states have call successors, (1005) [2024-11-18 13:58:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4764 states to 4764 states and 7986 transitions. [2024-11-18 13:58:38,604 INFO L78 Accepts]: Start accepts. Automaton has 4764 states and 7986 transitions. Word has length 151 [2024-11-18 13:58:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:38,605 INFO L471 AbstractCegarLoop]: Abstraction has 4764 states and 7986 transitions. [2024-11-18 13:58:38,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-18 13:58:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4764 states and 7986 transitions. [2024-11-18 13:58:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-18 13:58:38,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:38,609 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:38,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-18 13:58:38,609 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:38,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1822888153, now seen corresponding path program 1 times [2024-11-18 13:58:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314216468] [2024-11-18 13:58:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-18 13:58:38,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:38,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314216468] [2024-11-18 13:58:38,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314216468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:38,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489843584] [2024-11-18 13:58:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:38,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:38,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:38,832 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:38,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-18 13:58:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:39,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:39,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:58:39,201 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:39,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489843584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:39,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:39,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-18 13:58:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930928246] [2024-11-18 13:58:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:39,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:39,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:58:39,204 INFO L87 Difference]: Start difference. First operand 4764 states and 7986 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 13:58:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:39,586 INFO L93 Difference]: Finished difference Result 9259 states and 15784 transitions. [2024-11-18 13:58:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 154 [2024-11-18 13:58:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:39,617 INFO L225 Difference]: With dead ends: 9259 [2024-11-18 13:58:39,617 INFO L226 Difference]: Without dead ends: 4822 [2024-11-18 13:58:39,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:58:39,637 INFO L432 NwaCegarLoop]: 890 mSDtfsCounter, 263 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:39,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2385 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:39,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2024-11-18 13:58:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4768. [2024-11-18 13:58:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 3735 states have (on average 1.6364123159303883) internal successors, (6112), 3900 states have internal predecessors, (6112), 816 states have call successors, (816), 182 states have call predecessors, (816), 216 states have return successors, (1009), 807 states have call predecessors, (1009), 811 states have call successors, (1009) [2024-11-18 13:58:39,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 7937 transitions. [2024-11-18 13:58:39,903 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 7937 transitions. Word has length 154 [2024-11-18 13:58:39,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:39,903 INFO L471 AbstractCegarLoop]: Abstraction has 4768 states and 7937 transitions. [2024-11-18 13:58:39,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 13:58:39,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 7937 transitions. [2024-11-18 13:58:39,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-18 13:58:39,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:39,907 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:39,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-18 13:58:40,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:40,108 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:40,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1486080257, now seen corresponding path program 1 times [2024-11-18 13:58:40,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:40,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949158659] [2024-11-18 13:58:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:40,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949158659] [2024-11-18 13:58:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949158659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654463688] [2024-11-18 13:58:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:40,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:40,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:40,354 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:40,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-18 13:58:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:40,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:58:40,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:58:40,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654463688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:40,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:40,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-18 13:58:40,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039537364] [2024-11-18 13:58:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:40,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:58:40,788 INFO L87 Difference]: Start difference. First operand 4768 states and 7937 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 13:58:41,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:41,096 INFO L93 Difference]: Finished difference Result 9486 states and 16024 transitions. [2024-11-18 13:58:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:41,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 158 [2024-11-18 13:58:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:41,122 INFO L225 Difference]: With dead ends: 9486 [2024-11-18 13:58:41,122 INFO L226 Difference]: Without dead ends: 4818 [2024-11-18 13:58:41,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:58:41,141 INFO L432 NwaCegarLoop]: 803 mSDtfsCounter, 14 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:41,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2375 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:58:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2024-11-18 13:58:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 4818. [2024-11-18 13:58:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4818 states, 3775 states have (on average 1.6267549668874173) internal successors, (6141), 3945 states have internal predecessors, (6141), 816 states have call successors, (816), 187 states have call predecessors, (816), 226 states have return successors, (1019), 807 states have call predecessors, (1019), 811 states have call successors, (1019) [2024-11-18 13:58:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7976 transitions. [2024-11-18 13:58:41,338 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7976 transitions. Word has length 158 [2024-11-18 13:58:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:41,339 INFO L471 AbstractCegarLoop]: Abstraction has 4818 states and 7976 transitions. [2024-11-18 13:58:41,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-18 13:58:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7976 transitions. [2024-11-18 13:58:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 13:58:41,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:41,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:41,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-18 13:58:41,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:41,546 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:41,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash -768262804, now seen corresponding path program 1 times [2024-11-18 13:58:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778049765] [2024-11-18 13:58:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:58:41,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:41,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778049765] [2024-11-18 13:58:41,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778049765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:41,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:41,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:58:41,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232199465] [2024-11-18 13:58:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:41,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:58:41,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:41,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:58:41,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:41,750 INFO L87 Difference]: Start difference. First operand 4818 states and 7976 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 13:58:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:43,734 INFO L93 Difference]: Finished difference Result 9282 states and 15457 transitions. [2024-11-18 13:58:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:58:43,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 159 [2024-11-18 13:58:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:43,765 INFO L225 Difference]: With dead ends: 9282 [2024-11-18 13:58:43,766 INFO L226 Difference]: Without dead ends: 5346 [2024-11-18 13:58:43,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:58:43,783 INFO L432 NwaCegarLoop]: 381 mSDtfsCounter, 1993 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 3503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:43,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 1691 Invalid, 3503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-18 13:58:43,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2024-11-18 13:58:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 4967. [2024-11-18 13:58:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 3885 states have (on average 1.6172458172458173) internal successors, (6283), 4065 states have internal predecessors, (6283), 830 states have call successors, (830), 202 states have call predecessors, (830), 251 states have return successors, (1070), 821 states have call predecessors, (1070), 825 states have call successors, (1070) [2024-11-18 13:58:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 8183 transitions. [2024-11-18 13:58:43,996 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 8183 transitions. Word has length 159 [2024-11-18 13:58:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:43,996 INFO L471 AbstractCegarLoop]: Abstraction has 4967 states and 8183 transitions. [2024-11-18 13:58:43,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-18 13:58:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 8183 transitions. [2024-11-18 13:58:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 13:58:44,000 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:44,001 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:44,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-18 13:58:44,001 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:44,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:44,001 INFO L85 PathProgramCache]: Analyzing trace with hash -623965538, now seen corresponding path program 1 times [2024-11-18 13:58:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:44,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102014187] [2024-11-18 13:58:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:44,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 13:58:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102014187] [2024-11-18 13:58:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102014187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679030211] [2024-11-18 13:58:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:44,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:44,224 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:44,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-18 13:58:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:44,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 13:58:44,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:58:44,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:44,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679030211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:44,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:44,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2024-11-18 13:58:44,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47455780] [2024-11-18 13:58:44,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:44,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:58:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:44,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:58:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:44,586 INFO L87 Difference]: Start difference. First operand 4967 states and 8183 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 13:58:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:44,805 INFO L93 Difference]: Finished difference Result 10394 states and 17254 transitions. [2024-11-18 13:58:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:58:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 164 [2024-11-18 13:58:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:44,837 INFO L225 Difference]: With dead ends: 10394 [2024-11-18 13:58:44,838 INFO L226 Difference]: Without dead ends: 6281 [2024-11-18 13:58:44,856 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:58:44,856 INFO L432 NwaCegarLoop]: 1281 mSDtfsCounter, 724 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2087 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:44,856 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 2087 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:44,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6281 states. [2024-11-18 13:58:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6281 to 5948. [2024-11-18 13:58:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5948 states, 4664 states have (on average 1.6200686106346485) internal successors, (7556), 4867 states have internal predecessors, (7556), 989 states have call successors, (989), 243 states have call predecessors, (989), 294 states have return successors, (1264), 983 states have call predecessors, (1264), 984 states have call successors, (1264) [2024-11-18 13:58:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5948 states to 5948 states and 9809 transitions. [2024-11-18 13:58:45,263 INFO L78 Accepts]: Start accepts. Automaton has 5948 states and 9809 transitions. Word has length 164 [2024-11-18 13:58:45,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:45,264 INFO L471 AbstractCegarLoop]: Abstraction has 5948 states and 9809 transitions. [2024-11-18 13:58:45,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-18 13:58:45,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5948 states and 9809 transitions. [2024-11-18 13:58:45,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 13:58:45,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:45,269 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:45,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:45,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-18 13:58:45,470 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:45,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:45,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1002336109, now seen corresponding path program 1 times [2024-11-18 13:58:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:45,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436616930] [2024-11-18 13:58:45,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:45,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 13:58:45,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436616930] [2024-11-18 13:58:45,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436616930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:45,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509642655] [2024-11-18 13:58:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:45,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:45,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:45,872 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:45,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-18 13:58:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:46,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:58:46,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:58:46,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:46,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509642655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:46,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:46,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2024-11-18 13:58:46,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983791818] [2024-11-18 13:58:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:46,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:58:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:46,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:58:46,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:58:46,463 INFO L87 Difference]: Start difference. First operand 5948 states and 9809 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 13:58:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:48,722 INFO L93 Difference]: Finished difference Result 11722 states and 19495 transitions. [2024-11-18 13:58:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:58:48,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 166 [2024-11-18 13:58:48,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:48,768 INFO L225 Difference]: With dead ends: 11722 [2024-11-18 13:58:48,768 INFO L226 Difference]: Without dead ends: 6521 [2024-11-18 13:58:48,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-18 13:58:48,790 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 1729 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 3491 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 3491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:48,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1811 Valid, 2400 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 3491 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 13:58:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2024-11-18 13:58:49,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 6054. [2024-11-18 13:58:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6054 states, 4728 states have (on average 1.615482233502538) internal successors, (7638), 4945 states have internal predecessors, (7638), 1021 states have call successors, (1021), 243 states have call predecessors, (1021), 304 states have return successors, (1394), 1011 states have call predecessors, (1394), 1016 states have call successors, (1394) [2024-11-18 13:58:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6054 states to 6054 states and 10053 transitions. [2024-11-18 13:58:49,087 INFO L78 Accepts]: Start accepts. Automaton has 6054 states and 10053 transitions. Word has length 166 [2024-11-18 13:58:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:49,087 INFO L471 AbstractCegarLoop]: Abstraction has 6054 states and 10053 transitions. [2024-11-18 13:58:49,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 13:58:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6054 states and 10053 transitions. [2024-11-18 13:58:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-18 13:58:49,091 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:49,091 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:49,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-18 13:58:49,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 13:58:49,292 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:49,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2125934868, now seen corresponding path program 1 times [2024-11-18 13:58:49,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:49,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321177602] [2024-11-18 13:58:49,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-18 13:58:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321177602] [2024-11-18 13:58:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321177602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:49,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:49,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 13:58:49,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123316786] [2024-11-18 13:58:49,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:49,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:58:49,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:58:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:58:49,698 INFO L87 Difference]: Start difference. First operand 6054 states and 10053 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:58:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:51,000 INFO L93 Difference]: Finished difference Result 12030 states and 20096 transitions. [2024-11-18 13:58:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 13:58:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2024-11-18 13:58:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:51,025 INFO L225 Difference]: With dead ends: 12030 [2024-11-18 13:58:51,026 INFO L226 Difference]: Without dead ends: 6088 [2024-11-18 13:58:51,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:58:51,041 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 1205 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:51,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 1718 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 13:58:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6088 states. [2024-11-18 13:58:51,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6088 to 6066. [2024-11-18 13:58:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 4734 states have (on average 1.6070975918884665) internal successors, (7608), 4957 states have internal predecessors, (7608), 1021 states have call successors, (1021), 243 states have call predecessors, (1021), 310 states have return successors, (1442), 1011 states have call predecessors, (1442), 1016 states have call successors, (1442) [2024-11-18 13:58:51,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 10071 transitions. [2024-11-18 13:58:51,388 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 10071 transitions. Word has length 166 [2024-11-18 13:58:51,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:51,389 INFO L471 AbstractCegarLoop]: Abstraction has 6066 states and 10071 transitions. [2024-11-18 13:58:51,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:58:51,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 10071 transitions. [2024-11-18 13:58:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 13:58:51,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:51,393 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:51,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-18 13:58:51,393 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:51,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:51,394 INFO L85 PathProgramCache]: Analyzing trace with hash -643558161, now seen corresponding path program 1 times [2024-11-18 13:58:51,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:51,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914903578] [2024-11-18 13:58:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:51,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:58:51,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:51,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914903578] [2024-11-18 13:58:51,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914903578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:51,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:51,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:58:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060043750] [2024-11-18 13:58:51,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:51,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:58:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:58:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:58:51,546 INFO L87 Difference]: Start difference. First operand 6066 states and 10071 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:58:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:54,463 INFO L93 Difference]: Finished difference Result 21608 states and 36874 transitions. [2024-11-18 13:58:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:58:54,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 167 [2024-11-18 13:58:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:54,623 INFO L225 Difference]: With dead ends: 21608 [2024-11-18 13:58:54,623 INFO L226 Difference]: Without dead ends: 15662 [2024-11-18 13:58:54,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:58:54,673 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 2131 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 2187 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 2187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:54,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2224 Valid, 1307 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 2187 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-18 13:58:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15662 states. [2024-11-18 13:58:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15662 to 15147. [2024-11-18 13:58:55,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 11373 states have (on average 1.5959729183153082) internal successors, (18151), 12057 states have internal predecessors, (18151), 3055 states have call successors, (3055), 522 states have call predecessors, (3055), 718 states have return successors, (4554), 3051 states have call predecessors, (4554), 3050 states have call successors, (4554) [2024-11-18 13:58:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 25760 transitions. [2024-11-18 13:58:55,625 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 25760 transitions. Word has length 167 [2024-11-18 13:58:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:55,627 INFO L471 AbstractCegarLoop]: Abstraction has 15147 states and 25760 transitions. [2024-11-18 13:58:55,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:58:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 25760 transitions. [2024-11-18 13:58:55,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-18 13:58:55,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:55,632 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:58:55,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-18 13:58:55,633 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:55,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1570269107, now seen corresponding path program 1 times [2024-11-18 13:58:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755515034] [2024-11-18 13:58:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:55,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-18 13:58:55,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:55,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755515034] [2024-11-18 13:58:55,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755515034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:55,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:58:55,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:58:55,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710507599] [2024-11-18 13:58:55,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:55,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:58:55,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:55,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:58:55,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:58:55,879 INFO L87 Difference]: Start difference. First operand 15147 states and 25760 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:58:58,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:58,548 INFO L93 Difference]: Finished difference Result 45855 states and 79223 transitions. [2024-11-18 13:58:58,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:58:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2024-11-18 13:58:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:58,761 INFO L225 Difference]: With dead ends: 45855 [2024-11-18 13:58:58,761 INFO L226 Difference]: Without dead ends: 30812 [2024-11-18 13:58:58,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:58:58,836 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 1803 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:58,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 611 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 13:58:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30812 states. [2024-11-18 13:59:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30812 to 30810. [2024-11-18 13:59:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30810 states, 23161 states have (on average 1.5834376754026165) internal successors, (36674), 24601 states have internal predecessors, (36674), 6130 states have call successors, (6130), 1040 states have call predecessors, (6130), 1518 states have return successors, (10076), 6136 states have call predecessors, (10076), 6125 states have call successors, (10076) [2024-11-18 13:59:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30810 states to 30810 states and 52880 transitions. [2024-11-18 13:59:01,302 INFO L78 Accepts]: Start accepts. Automaton has 30810 states and 52880 transitions. Word has length 173 [2024-11-18 13:59:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:01,302 INFO L471 AbstractCegarLoop]: Abstraction has 30810 states and 52880 transitions. [2024-11-18 13:59:01,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 13:59:01,303 INFO L276 IsEmpty]: Start isEmpty. Operand 30810 states and 52880 transitions. [2024-11-18 13:59:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 13:59:01,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:01,310 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:01,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-18 13:59:01,310 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:01,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:01,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1685330186, now seen corresponding path program 1 times [2024-11-18 13:59:01,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:01,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912478588] [2024-11-18 13:59:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:59:01,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:01,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912478588] [2024-11-18 13:59:01,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912478588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:01,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307119648] [2024-11-18 13:59:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:01,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:01,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:01,456 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:01,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-18 13:59:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:01,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:59:01,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 13:59:01,829 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:01,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307119648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:01,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:01,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:01,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777835741] [2024-11-18 13:59:01,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:01,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:01,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:01,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:01,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:01,831 INFO L87 Difference]: Start difference. First operand 30810 states and 52880 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 13:59:03,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:03,404 INFO L93 Difference]: Finished difference Result 45576 states and 77950 transitions. [2024-11-18 13:59:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:59:03,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 177 [2024-11-18 13:59:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:03,482 INFO L225 Difference]: With dead ends: 45576 [2024-11-18 13:59:03,482 INFO L226 Difference]: Without dead ends: 14867 [2024-11-18 13:59:03,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:03,577 INFO L432 NwaCegarLoop]: 797 mSDtfsCounter, 15 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:03,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2368 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14867 states. [2024-11-18 13:59:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14867 to 14867. [2024-11-18 13:59:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14867 states, 11186 states have (on average 1.5893080636509924) internal successors, (17778), 11869 states have internal predecessors, (17778), 2962 states have call successors, (2962), 522 states have call predecessors, (2962), 718 states have return successors, (4462), 2959 states have call predecessors, (4462), 2958 states have call successors, (4462) [2024-11-18 13:59:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14867 states to 14867 states and 25202 transitions. [2024-11-18 13:59:04,490 INFO L78 Accepts]: Start accepts. Automaton has 14867 states and 25202 transitions. Word has length 177 [2024-11-18 13:59:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:04,490 INFO L471 AbstractCegarLoop]: Abstraction has 14867 states and 25202 transitions. [2024-11-18 13:59:04,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-18 13:59:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 14867 states and 25202 transitions. [2024-11-18 13:59:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-18 13:59:04,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:04,496 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:04,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:04,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:04,697 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:04,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash -403020975, now seen corresponding path program 1 times [2024-11-18 13:59:04,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:04,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756019376] [2024-11-18 13:59:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:04,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:05,175 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756019376] [2024-11-18 13:59:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756019376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035360566] [2024-11-18 13:59:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:05,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:05,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:05,178 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:05,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-18 13:59:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:05,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:59:05,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-18 13:59:05,618 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:05,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035360566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:05,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:05,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2024-11-18 13:59:05,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456800701] [2024-11-18 13:59:05,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:05,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:59:05,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:05,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:59:05,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:59:05,620 INFO L87 Difference]: Start difference. First operand 14867 states and 25202 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 13:59:06,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:06,809 INFO L93 Difference]: Finished difference Result 14917 states and 25266 transitions. [2024-11-18 13:59:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:06,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 176 [2024-11-18 13:59:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:06,887 INFO L225 Difference]: With dead ends: 14917 [2024-11-18 13:59:06,887 INFO L226 Difference]: Without dead ends: 14903 [2024-11-18 13:59:06,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:59:06,897 INFO L432 NwaCegarLoop]: 804 mSDtfsCounter, 0 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:06,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3202 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14903 states. [2024-11-18 13:59:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14903 to 14903. [2024-11-18 13:59:07,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14903 states, 11222 states have (on average 1.5863482445196935) internal successors, (17802), 11905 states have internal predecessors, (17802), 2962 states have call successors, (2962), 522 states have call predecessors, (2962), 718 states have return successors, (4462), 2959 states have call predecessors, (4462), 2958 states have call successors, (4462) [2024-11-18 13:59:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14903 states to 14903 states and 25226 transitions. [2024-11-18 13:59:07,731 INFO L78 Accepts]: Start accepts. Automaton has 14903 states and 25226 transitions. Word has length 176 [2024-11-18 13:59:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:07,731 INFO L471 AbstractCegarLoop]: Abstraction has 14903 states and 25226 transitions. [2024-11-18 13:59:07,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2024-11-18 13:59:07,732 INFO L276 IsEmpty]: Start isEmpty. Operand 14903 states and 25226 transitions. [2024-11-18 13:59:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-18 13:59:07,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:07,739 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:07,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-18 13:59:07,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-18 13:59:07,940 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:07,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:07,940 INFO L85 PathProgramCache]: Analyzing trace with hash -919585865, now seen corresponding path program 1 times [2024-11-18 13:59:07,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:07,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725393247] [2024-11-18 13:59:07,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:07,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 13:59:08,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725393247] [2024-11-18 13:59:08,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725393247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941272646] [2024-11-18 13:59:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:08,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:08,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:08,603 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:08,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-18 13:59:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:09,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 13:59:09,018 INFO L278 TraceCheckSpWp]: Computing forward predicates...