./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.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 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 19:15:01,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 19:15:01,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 19:15:01,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 19:15:01,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 19:15:01,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 19:15:01,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 19:15:01,596 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 19:15:01,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 19:15:01,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 19:15:01,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 19:15:01,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 19:15:01,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 19:15:01,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 19:15:01,601 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 19:15:01,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 19:15:01,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 19:15:01,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 19:15:01,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 19:15:01,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 19:15:01,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 19:15:01,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 19:15:01,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 19:15:01,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 19:15:01,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 19:15:01,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 19:15:01,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 19:15:01,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 19:15:01,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 19:15:01,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 19:15:01,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 19:15:01,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 19:15:01,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:15:01,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 19:15:01,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 19:15:01,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 19:15:01,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 19:15:01,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 19:15:01,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 19:15:01,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 19:15:01,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 19:15:01,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 19:15:01,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 [2024-10-12 19:15:01,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 19:15:01,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 19:15:01,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 19:15:01,900 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 19:15:01,901 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 19:15:01,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2024-10-12 19:15:03,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 19:15:03,669 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 19:15:03,670 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2024-10-12 19:15:03,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a9b47cd0/6adb951d4b3645aab67ce2d99caa26fb/FLAG2cfbf44e4 [2024-10-12 19:15:03,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a9b47cd0/6adb951d4b3645aab67ce2d99caa26fb [2024-10-12 19:15:03,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 19:15:03,713 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 19:15:03,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 19:15:03,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 19:15:03,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 19:15:03,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:15:03" (1/1) ... [2024-10-12 19:15:03,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e461741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:03, skipping insertion in model container [2024-10-12 19:15:03,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:15:03" (1/1) ... [2024-10-12 19:15:03,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 19:15:04,165 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2024-10-12 19:15:04,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:15:04,406 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 19:15:04,415 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-10-12 19:15:04,416 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2024-10-12 19:15:04,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [452] [2024-10-12 19:15:04,417 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [553] [2024-10-12 19:15:04,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] [2024-10-12 19:15:04,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [916] [2024-10-12 19:15:04,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1099] [2024-10-12 19:15:04,418 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1770] [2024-10-12 19:15:04,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1783] [2024-10-12 19:15:04,419 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1903] [2024-10-12 19:15:04,447 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2024-10-12 19:15:04,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 19:15:04,549 INFO L204 MainTranslator]: Completed translation [2024-10-12 19:15:04,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04 WrapperNode [2024-10-12 19:15:04,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 19:15:04,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 19:15:04,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 19:15:04,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 19:15:04,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,619 INFO L138 Inliner]: procedures = 91, calls = 335, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 834 [2024-10-12 19:15:04,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 19:15:04,620 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 19:15:04,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 19:15:04,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 19:15:04,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,637 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,664 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]. [2024-10-12 19:15:04,664 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,694 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,701 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,706 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 19:15:04,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 19:15:04,716 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 19:15:04,716 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 19:15:04,717 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (1/1) ... [2024-10-12 19:15:04,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 19:15:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:04,773 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) [2024-10-12 19:15:04,780 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 [2024-10-12 19:15:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-10-12 19:15:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-10-12 19:15:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 19:15:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-10-12 19:15:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-10-12 19:15:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-10-12 19:15:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-10-12 19:15:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-10-12 19:15:04,826 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-10-12 19:15:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-10-12 19:15:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-10-12 19:15:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-10-12 19:15:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-10-12 19:15:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-10-12 19:15:04,828 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-10-12 19:15:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-10-12 19:15:04,828 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-10-12 19:15:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-10-12 19:15:04,829 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-10-12 19:15:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-10-12 19:15:04,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-10-12 19:15:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-10-12 19:15:04,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-10-12 19:15:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-10-12 19:15:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-10-12 19:15:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-10-12 19:15:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-10-12 19:15:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-10-12 19:15:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-10-12 19:15:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-10-12 19:15:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-10-12 19:15:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-10-12 19:15:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-10-12 19:15:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-10-12 19:15:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-10-12 19:15:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-10-12 19:15:04,832 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-10-12 19:15:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-12 19:15:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-10-12 19:15:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-10-12 19:15:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-10-12 19:15:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-10-12 19:15:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-10-12 19:15:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-10-12 19:15:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-10-12 19:15:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 19:15:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 19:15:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-10-12 19:15:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-10-12 19:15:05,036 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 19:15:05,038 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 19:15:06,240 INFO L? ?]: Removed 439 outVars from TransFormulas that were not future-live. [2024-10-12 19:15:06,240 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 19:15:06,364 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 19:15:06,365 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 19:15:06,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:15:06 BoogieIcfgContainer [2024-10-12 19:15:06,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 19:15:06,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 19:15:06,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 19:15:06,370 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 19:15:06,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:15:03" (1/3) ... [2024-10-12 19:15:06,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b187e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:15:06, skipping insertion in model container [2024-10-12 19:15:06,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:15:04" (2/3) ... [2024-10-12 19:15:06,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b187e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:15:06, skipping insertion in model container [2024-10-12 19:15:06,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:15:06" (3/3) ... [2024-10-12 19:15:06,373 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2024-10-12 19:15:06,390 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 19:15:06,391 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 19:15:06,471 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 19:15:06,480 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;@2110668d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 19:15:06,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 19:15:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand has 527 states, 412 states have (on average 1.7427184466019416) internal successors, (718), 433 states have internal predecessors, (718), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2024-10-12 19:15:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-12 19:15:06,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:06,511 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] [2024-10-12 19:15:06,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:06,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1783266936, now seen corresponding path program 1 times [2024-10-12 19:15:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:06,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764046731] [2024-10-12 19:15:06,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:06,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:15:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 19:15:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 19:15:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-12 19:15:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:07,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:08,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:08,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:08,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-12 19:15:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:15:08,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:08,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764046731] [2024-10-12 19:15:08,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764046731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:08,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:15:08,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-12 19:15:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232829397] [2024-10-12 19:15:08,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:08,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 19:15:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 19:15:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:15:08,132 INFO L87 Difference]: Start difference. First operand has 527 states, 412 states have (on average 1.7427184466019416) internal successors, (718), 433 states have internal predecessors, (718), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-12 19:15:15,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:15,830 INFO L93 Difference]: Finished difference Result 1306 states and 2268 transitions. [2024-10-12 19:15:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 19:15:15,832 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2024-10-12 19:15:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:15,857 INFO L225 Difference]: With dead ends: 1306 [2024-10-12 19:15:15,857 INFO L226 Difference]: Without dead ends: 779 [2024-10-12 19:15:15,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-10-12 19:15:15,879 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 1803 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 5332 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 5813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 5332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:15,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 2759 Invalid, 5813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [481 Valid, 5332 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-10-12 19:15:15,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-10-12 19:15:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 527. [2024-10-12 19:15:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 413 states have (on average 1.7263922518159807) internal successors, (713), 432 states have internal predecessors, (713), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (88), 85 states have call predecessors, (88), 86 states have call successors, (88) [2024-10-12 19:15:16,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 892 transitions. [2024-10-12 19:15:16,141 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 892 transitions. Word has length 87 [2024-10-12 19:15:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:16,142 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 892 transitions. [2024-10-12 19:15:16,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2024-10-12 19:15:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 892 transitions. [2024-10-12 19:15:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-12 19:15:16,151 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:16,151 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] [2024-10-12 19:15:16,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 19:15:16,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:16,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash 909007189, now seen corresponding path program 1 times [2024-10-12 19:15:16,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700989939] [2024-10-12 19:15:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:16,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:15:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 19:15:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-12 19:15:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:16,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:17,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-12 19:15:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 19:15:17,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:17,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700989939] [2024-10-12 19:15:17,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700989939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:17,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 19:15:17,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-12 19:15:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215914438] [2024-10-12 19:15:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:17,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-12 19:15:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 19:15:17,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:17,027 INFO L87 Difference]: Start difference. First operand 527 states and 892 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 19:15:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:30,102 INFO L93 Difference]: Finished difference Result 2431 states and 4342 transitions. [2024-10-12 19:15:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-12 19:15:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2024-10-12 19:15:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:30,119 INFO L225 Difference]: With dead ends: 2431 [2024-10-12 19:15:30,119 INFO L226 Difference]: Without dead ends: 1907 [2024-10-12 19:15:30,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2024-10-12 19:15:30,126 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 4897 mSDsluCounter, 2983 mSDsCounter, 0 mSdLazyCounter, 6245 mSolverCounterSat, 1497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4976 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 7742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1497 IncrementalHoareTripleChecker+Valid, 6245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:30,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4976 Valid, 3519 Invalid, 7742 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1497 Valid, 6245 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-10-12 19:15:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2024-10-12 19:15:30,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1370. [2024-10-12 19:15:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1065 states have (on average 1.6826291079812206) internal successors, (1792), 1112 states have internal predecessors, (1792), 244 states have call successors, (244), 57 states have call predecessors, (244), 60 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2024-10-12 19:15:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2314 transitions. [2024-10-12 19:15:30,451 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2314 transitions. Word has length 94 [2024-10-12 19:15:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:30,451 INFO L471 AbstractCegarLoop]: Abstraction has 1370 states and 2314 transitions. [2024-10-12 19:15:30,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-12 19:15:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2314 transitions. [2024-10-12 19:15:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-12 19:15:30,455 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:30,456 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] [2024-10-12 19:15:30,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 19:15:30,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:30,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:30,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1003911060, now seen corresponding path program 1 times [2024-10-12 19:15:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:30,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205447089] [2024-10-12 19:15:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:30,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:30,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:30,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:30,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:30,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-12 19:15:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:30,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:30,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-12 19:15:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:15:31,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205447089] [2024-10-12 19:15:31,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205447089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:31,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698749335] [2024-10-12 19:15:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:31,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:31,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:31,303 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) [2024-10-12 19:15:31,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 19:15:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:31,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:31,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:31,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:31,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698749335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:31,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:31,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-12 19:15:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110734779] [2024-10-12 19:15:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:31,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:31,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:31,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:31,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:31,803 INFO L87 Difference]: Start difference. First operand 1370 states and 2314 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:32,200 INFO L93 Difference]: Finished difference Result 2744 states and 4635 transitions. [2024-10-12 19:15:32,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:32,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2024-10-12 19:15:32,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:32,212 INFO L225 Difference]: With dead ends: 2744 [2024-10-12 19:15:32,213 INFO L226 Difference]: Without dead ends: 1379 [2024-10-12 19:15:32,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:32,221 INFO L432 NwaCegarLoop]: 862 mSDtfsCounter, 13 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:32,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2580 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-10-12 19:15:32,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2024-10-12 19:15:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1073 states have (on average 1.6812674743709226) internal successors, (1804), 1120 states have internal predecessors, (1804), 244 states have call successors, (244), 58 states have call predecessors, (244), 61 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2024-10-12 19:15:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2326 transitions. [2024-10-12 19:15:32,519 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2326 transitions. Word has length 103 [2024-10-12 19:15:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:32,521 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 2326 transitions. [2024-10-12 19:15:32,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2326 transitions. [2024-10-12 19:15:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-12 19:15:32,527 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:32,528 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] [2024-10-12 19:15:32,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 19:15:32,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:32,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:32,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1499464277, now seen corresponding path program 1 times [2024-10-12 19:15:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:32,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814665355] [2024-10-12 19:15:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 19:15:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-12 19:15:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-12 19:15:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:15:33,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814665355] [2024-10-12 19:15:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814665355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695812185] [2024-10-12 19:15:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:33,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:33,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:33,586 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) [2024-10-12 19:15:33,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 19:15:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:33,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:33,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:33,949 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:33,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695812185] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:33,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:33,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2024-10-12 19:15:33,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765472459] [2024-10-12 19:15:33,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:33,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:33,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-10-12 19:15:33,951 INFO L87 Difference]: Start difference. First operand 1379 states and 2326 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:34,379 INFO L93 Difference]: Finished difference Result 2746 states and 4636 transitions. [2024-10-12 19:15:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:34,380 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-10-12 19:15:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:34,391 INFO L225 Difference]: With dead ends: 2746 [2024-10-12 19:15:34,391 INFO L226 Difference]: Without dead ends: 1379 [2024-10-12 19:15:34,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:15:34,401 INFO L432 NwaCegarLoop]: 862 mSDtfsCounter, 11 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:34,403 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2580 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-10-12 19:15:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2024-10-12 19:15:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1073 states have (on average 1.6803355079217148) internal successors, (1803), 1120 states have internal predecessors, (1803), 244 states have call successors, (244), 58 states have call predecessors, (244), 61 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2024-10-12 19:15:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2325 transitions. [2024-10-12 19:15:34,741 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2325 transitions. Word has length 104 [2024-10-12 19:15:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:34,742 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 2325 transitions. [2024-10-12 19:15:34,742 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2325 transitions. [2024-10-12 19:15:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-12 19:15:34,745 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:34,746 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] [2024-10-12 19:15:34,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 19:15:34,946 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,SelfDestructingSolverStorable3 [2024-10-12 19:15:34,947 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:34,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:34,947 INFO L85 PathProgramCache]: Analyzing trace with hash 202491536, now seen corresponding path program 1 times [2024-10-12 19:15:34,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:34,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070281313] [2024-10-12 19:15:34,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:34,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-12 19:15:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-12 19:15:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 19:15:35,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:35,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070281313] [2024-10-12 19:15:35,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070281313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:35,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875740533] [2024-10-12 19:15:35,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:35,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:35,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:35,663 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) [2024-10-12 19:15:35,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 19:15:35,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:35,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:35,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:36,038 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:36,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875740533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:36,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:36,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-10-12 19:15:36,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635500944] [2024-10-12 19:15:36,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:36,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:36,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:36,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:36,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-12 19:15:36,041 INFO L87 Difference]: Start difference. First operand 1379 states and 2325 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:36,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:36,421 INFO L93 Difference]: Finished difference Result 2746 states and 4635 transitions. [2024-10-12 19:15:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:36,422 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2024-10-12 19:15:36,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:36,432 INFO L225 Difference]: With dead ends: 2746 [2024-10-12 19:15:36,432 INFO L226 Difference]: Without dead ends: 1379 [2024-10-12 19:15:36,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:36,439 INFO L432 NwaCegarLoop]: 862 mSDtfsCounter, 10 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:36,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2580 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-10-12 19:15:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2024-10-12 19:15:36,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1073 states have (on average 1.679403541472507) internal successors, (1802), 1120 states have internal predecessors, (1802), 244 states have call successors, (244), 58 states have call predecessors, (244), 61 states have return successors, (278), 236 states have call predecessors, (278), 239 states have call successors, (278) [2024-10-12 19:15:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2324 transitions. [2024-10-12 19:15:36,733 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2324 transitions. Word has length 105 [2024-10-12 19:15:36,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:36,733 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 2324 transitions. [2024-10-12 19:15:36,734 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2324 transitions. [2024-10-12 19:15:36,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-12 19:15:36,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:36,738 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] [2024-10-12 19:15:36,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:36,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:36,943 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:36,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1353812665, now seen corresponding path program 1 times [2024-10-12 19:15:36,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:36,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518280988] [2024-10-12 19:15:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:36,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:15:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:15:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:15:37,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:37,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518280988] [2024-10-12 19:15:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518280988] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753184143] [2024-10-12 19:15:37,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:37,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:37,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:37,652 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) [2024-10-12 19:15:37,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 19:15:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:37,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:15:37,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:38,047 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753184143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:38,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:38,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-12 19:15:38,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38023890] [2024-10-12 19:15:38,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:38,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:15:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:38,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:15:38,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:38,050 INFO L87 Difference]: Start difference. First operand 1379 states and 2324 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:38,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:38,408 INFO L93 Difference]: Finished difference Result 2764 states and 4664 transitions. [2024-10-12 19:15:38,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:15:38,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2024-10-12 19:15:38,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:38,421 INFO L225 Difference]: With dead ends: 2764 [2024-10-12 19:15:38,421 INFO L226 Difference]: Without dead ends: 1401 [2024-10-12 19:15:38,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:15:38,428 INFO L432 NwaCegarLoop]: 863 mSDtfsCounter, 100 mSDsluCounter, 4229 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:38,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5092 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2024-10-12 19:15:38,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1397. [2024-10-12 19:15:38,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1088 states have (on average 1.6792279411764706) internal successors, (1827), 1137 states have internal predecessors, (1827), 245 states have call successors, (245), 58 states have call predecessors, (245), 63 states have return successors, (282), 237 states have call predecessors, (282), 240 states have call successors, (282) [2024-10-12 19:15:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2354 transitions. [2024-10-12 19:15:38,807 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2354 transitions. Word has length 106 [2024-10-12 19:15:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:38,808 INFO L471 AbstractCegarLoop]: Abstraction has 1397 states and 2354 transitions. [2024-10-12 19:15:38,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2354 transitions. [2024-10-12 19:15:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-12 19:15:38,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:38,811 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] [2024-10-12 19:15:38,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 19:15:39,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:39,012 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:39,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2029505274, now seen corresponding path program 1 times [2024-10-12 19:15:39,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:39,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904775467] [2024-10-12 19:15:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-12 19:15:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-12 19:15:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:15:39,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:39,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904775467] [2024-10-12 19:15:39,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904775467] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:39,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452564526] [2024-10-12 19:15:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:39,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:39,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:39,614 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) [2024-10-12 19:15:39,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 19:15:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:39,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:39,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:39,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:39,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452564526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:39,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:39,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:15:39,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842545094] [2024-10-12 19:15:39,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:39,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:39,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:39,996 INFO L87 Difference]: Start difference. First operand 1397 states and 2354 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:40,360 INFO L93 Difference]: Finished difference Result 2816 states and 4761 transitions. [2024-10-12 19:15:40,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:15:40,362 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-10-12 19:15:40,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:40,372 INFO L225 Difference]: With dead ends: 2816 [2024-10-12 19:15:40,372 INFO L226 Difference]: Without dead ends: 1411 [2024-10-12 19:15:40,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:40,379 INFO L432 NwaCegarLoop]: 835 mSDtfsCounter, 75 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:40,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2467 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:40,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2024-10-12 19:15:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1397. [2024-10-12 19:15:40,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1088 states have (on average 1.6746323529411764) internal successors, (1822), 1137 states have internal predecessors, (1822), 245 states have call successors, (245), 58 states have call predecessors, (245), 63 states have return successors, (282), 237 states have call predecessors, (282), 240 states have call successors, (282) [2024-10-12 19:15:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2349 transitions. [2024-10-12 19:15:40,691 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2349 transitions. Word has length 106 [2024-10-12 19:15:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:40,692 INFO L471 AbstractCegarLoop]: Abstraction has 1397 states and 2349 transitions. [2024-10-12 19:15:40,692 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2349 transitions. [2024-10-12 19:15:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-12 19:15:40,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:40,695 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:40,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 19:15:40,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:40,896 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:40,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1290841304, now seen corresponding path program 1 times [2024-10-12 19:15:40,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:40,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883855111] [2024-10-12 19:15:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:40,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 19:15:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-12 19:15:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:15:41,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:41,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883855111] [2024-10-12 19:15:41,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883855111] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:41,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147369591] [2024-10-12 19:15:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:41,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:41,454 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) [2024-10-12 19:15:41,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-12 19:15:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:41,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:41,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:41,790 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:41,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:41,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147369591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:41,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:41,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:15:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559785415] [2024-10-12 19:15:41,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:41,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:41,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:41,794 INFO L87 Difference]: Start difference. First operand 1397 states and 2349 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:42,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:42,154 INFO L93 Difference]: Finished difference Result 2816 states and 4751 transitions. [2024-10-12 19:15:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:15:42,154 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2024-10-12 19:15:42,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:42,164 INFO L225 Difference]: With dead ends: 2816 [2024-10-12 19:15:42,164 INFO L226 Difference]: Without dead ends: 1411 [2024-10-12 19:15:42,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:42,170 INFO L432 NwaCegarLoop]: 835 mSDtfsCounter, 74 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:42,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2467 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2024-10-12 19:15:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1397. [2024-10-12 19:15:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1088 states have (on average 1.6700367647058822) internal successors, (1817), 1137 states have internal predecessors, (1817), 245 states have call successors, (245), 58 states have call predecessors, (245), 63 states have return successors, (282), 237 states have call predecessors, (282), 240 states have call successors, (282) [2024-10-12 19:15:42,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2344 transitions. [2024-10-12 19:15:42,433 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2344 transitions. Word has length 108 [2024-10-12 19:15:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:42,433 INFO L471 AbstractCegarLoop]: Abstraction has 1397 states and 2344 transitions. [2024-10-12 19:15:42,433 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:42,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2344 transitions. [2024-10-12 19:15:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-12 19:15:42,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:42,436 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] [2024-10-12 19:15:42,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 19:15:42,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:42,637 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:42,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2057238000, now seen corresponding path program 1 times [2024-10-12 19:15:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906434761] [2024-10-12 19:15:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:42,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 19:15:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:42,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-12 19:15:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:15:43,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906434761] [2024-10-12 19:15:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906434761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:43,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188371015] [2024-10-12 19:15:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:43,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:43,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:43,320 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) [2024-10-12 19:15:43,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-12 19:15:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:43,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:43,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:43,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:43,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188371015] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:43,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:43,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:15:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083257486] [2024-10-12 19:15:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:43,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:43,700 INFO L87 Difference]: Start difference. First operand 1397 states and 2344 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:44,140 INFO L93 Difference]: Finished difference Result 2866 states and 4822 transitions. [2024-10-12 19:15:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:44,141 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2024-10-12 19:15:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:44,149 INFO L225 Difference]: With dead ends: 2866 [2024-10-12 19:15:44,150 INFO L226 Difference]: Without dead ends: 1489 [2024-10-12 19:15:44,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:15:44,158 INFO L432 NwaCegarLoop]: 866 mSDtfsCounter, 129 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2496 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:44,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2496 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2024-10-12 19:15:44,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1447. [2024-10-12 19:15:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1137 states have (on average 1.6719437115215479) internal successors, (1901), 1186 states have internal predecessors, (1901), 245 states have call successors, (245), 59 states have call predecessors, (245), 64 states have return successors, (281), 237 states have call predecessors, (281), 240 states have call successors, (281) [2024-10-12 19:15:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2427 transitions. [2024-10-12 19:15:44,420 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2427 transitions. Word has length 110 [2024-10-12 19:15:44,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:44,421 INFO L471 AbstractCegarLoop]: Abstraction has 1447 states and 2427 transitions. [2024-10-12 19:15:44,421 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2427 transitions. [2024-10-12 19:15:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-12 19:15:44,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:44,424 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 19:15:44,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:44,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:44,625 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:44,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1695290732, now seen corresponding path program 1 times [2024-10-12 19:15:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:44,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441928355] [2024-10-12 19:15:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:44,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 19:15:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 19:15:45,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441928355] [2024-10-12 19:15:45,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441928355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:45,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610329566] [2024-10-12 19:15:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:45,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:45,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:45,338 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) [2024-10-12 19:15:45,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 19:15:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:45,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:15:45,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:45,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:45,787 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610329566] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:45,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-10-12 19:15:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006968063] [2024-10-12 19:15:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:45,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:15:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:15:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-10-12 19:15:45,790 INFO L87 Difference]: Start difference. First operand 1447 states and 2427 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:46,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:46,347 INFO L93 Difference]: Finished difference Result 2830 states and 4753 transitions. [2024-10-12 19:15:46,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:15:46,348 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-10-12 19:15:46,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:46,355 INFO L225 Difference]: With dead ends: 2830 [2024-10-12 19:15:46,355 INFO L226 Difference]: Without dead ends: 1467 [2024-10-12 19:15:46,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-10-12 19:15:46,361 INFO L432 NwaCegarLoop]: 843 mSDtfsCounter, 113 mSDsluCounter, 4970 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5813 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:46,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5813 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 19:15:46,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2024-10-12 19:15:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1447. [2024-10-12 19:15:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1137 states have (on average 1.6719437115215479) internal successors, (1901), 1186 states have internal predecessors, (1901), 245 states have call successors, (245), 59 states have call predecessors, (245), 64 states have return successors, (281), 237 states have call predecessors, (281), 240 states have call successors, (281) [2024-10-12 19:15:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2427 transitions. [2024-10-12 19:15:46,580 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2427 transitions. Word has length 111 [2024-10-12 19:15:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:46,580 INFO L471 AbstractCegarLoop]: Abstraction has 1447 states and 2427 transitions. [2024-10-12 19:15:46,580 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:46,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2427 transitions. [2024-10-12 19:15:46,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-12 19:15:46,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:46,584 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:46,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-12 19:15:46,784 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,SelfDestructingSolverStorable9 [2024-10-12 19:15:46,784 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:46,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash -198937972, now seen corresponding path program 1 times [2024-10-12 19:15:46,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:46,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627315889] [2024-10-12 19:15:46,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:46,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:46,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 19:15:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:15:47,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627315889] [2024-10-12 19:15:47,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627315889] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:47,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456269228] [2024-10-12 19:15:47,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:47,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:47,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:47,402 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) [2024-10-12 19:15:47,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 19:15:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:47,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:47,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 19:15:47,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456269228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:47,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:47,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:15:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281169197] [2024-10-12 19:15:47,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:47,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:47,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:47,745 INFO L87 Difference]: Start difference. First operand 1447 states and 2427 transitions. Second operand has 4 states, 4 states have (on average 21.5) 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), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:48,107 INFO L93 Difference]: Finished difference Result 2868 states and 4822 transitions. [2024-10-12 19:15:48,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:48,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) 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), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2024-10-12 19:15:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:48,116 INFO L225 Difference]: With dead ends: 2868 [2024-10-12 19:15:48,116 INFO L226 Difference]: Without dead ends: 1477 [2024-10-12 19:15:48,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:15:48,122 INFO L432 NwaCegarLoop]: 865 mSDtfsCounter, 123 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:48,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 2471 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2024-10-12 19:15:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1447. [2024-10-12 19:15:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1137 states have (on average 1.6675461741424802) internal successors, (1896), 1186 states have internal predecessors, (1896), 245 states have call successors, (245), 59 states have call predecessors, (245), 64 states have return successors, (281), 237 states have call predecessors, (281), 240 states have call successors, (281) [2024-10-12 19:15:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2422 transitions. [2024-10-12 19:15:48,338 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2422 transitions. Word has length 111 [2024-10-12 19:15:48,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:48,339 INFO L471 AbstractCegarLoop]: Abstraction has 1447 states and 2422 transitions. [2024-10-12 19:15:48,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) 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), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2422 transitions. [2024-10-12 19:15:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-10-12 19:15:48,342 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:48,342 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 19:15:48,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 19:15:48,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:48,543 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:48,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:48,544 INFO L85 PathProgramCache]: Analyzing trace with hash 496555467, now seen corresponding path program 1 times [2024-10-12 19:15:48,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:48,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022535282] [2024-10-12 19:15:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:48,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-12 19:15:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:15:49,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:49,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022535282] [2024-10-12 19:15:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022535282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:49,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859695399] [2024-10-12 19:15:49,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:49,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:49,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:49,211 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) [2024-10-12 19:15:49,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 19:15:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:49,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:15:49,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:49,678 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:49,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859695399] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:49,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:49,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-12 19:15:49,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396373759] [2024-10-12 19:15:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:49,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:15:49,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:15:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:49,681 INFO L87 Difference]: Start difference. First operand 1447 states and 2422 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:50,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:50,111 INFO L93 Difference]: Finished difference Result 2766 states and 4646 transitions. [2024-10-12 19:15:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:15:50,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2024-10-12 19:15:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:50,127 INFO L225 Difference]: With dead ends: 2766 [2024-10-12 19:15:50,127 INFO L226 Difference]: Without dead ends: 1469 [2024-10-12 19:15:50,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:15:50,133 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 86 mSDsluCounter, 4201 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5057 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:50,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5057 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2024-10-12 19:15:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1465. [2024-10-12 19:15:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1152 states have (on average 1.6675347222222223) internal successors, (1921), 1203 states have internal predecessors, (1921), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2024-10-12 19:15:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2451 transitions. [2024-10-12 19:15:50,365 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2451 transitions. Word has length 111 [2024-10-12 19:15:50,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:50,366 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 2451 transitions. [2024-10-12 19:15:50,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2451 transitions. [2024-10-12 19:15:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 19:15:50,369 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:50,369 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:50,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 19:15:50,573 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,SelfDestructingSolverStorable11 [2024-10-12 19:15:50,574 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:50,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:50,574 INFO L85 PathProgramCache]: Analyzing trace with hash -694957608, now seen corresponding path program 1 times [2024-10-12 19:15:50,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:50,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809438969] [2024-10-12 19:15:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:50,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:50,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:15:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:15:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:51,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809438969] [2024-10-12 19:15:51,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809438969] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:51,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335131275] [2024-10-12 19:15:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:51,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:51,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:51,183 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) [2024-10-12 19:15:51,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 19:15:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:51,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 19:15:51,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:51,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:51,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335131275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:51,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:51,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-12 19:15:51,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087419234] [2024-10-12 19:15:51,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:51,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:15:51,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:15:51,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:51,573 INFO L87 Difference]: Start difference. First operand 1465 states and 2451 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:51,875 INFO L93 Difference]: Finished difference Result 2794 states and 4695 transitions. [2024-10-12 19:15:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-12 19:15:51,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2024-10-12 19:15:51,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:51,888 INFO L225 Difference]: With dead ends: 2794 [2024-10-12 19:15:51,888 INFO L226 Difference]: Without dead ends: 1497 [2024-10-12 19:15:51,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:15:51,897 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 95 mSDsluCounter, 4191 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5047 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 [2024-10-12 19:15:51,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5047 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2024-10-12 19:15:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1465. [2024-10-12 19:15:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1152 states have (on average 1.6675347222222223) internal successors, (1921), 1203 states have internal predecessors, (1921), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2024-10-12 19:15:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2451 transitions. [2024-10-12 19:15:52,226 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2451 transitions. Word has length 112 [2024-10-12 19:15:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:52,226 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 2451 transitions. [2024-10-12 19:15:52,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2451 transitions. [2024-10-12 19:15:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 19:15:52,230 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:52,230 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] [2024-10-12 19:15:52,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 19:15:52,431 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,SelfDestructingSolverStorable12 [2024-10-12 19:15:52,431 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:52,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1306043048, now seen corresponding path program 1 times [2024-10-12 19:15:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:52,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138049836] [2024-10-12 19:15:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:52,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:52,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:15:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 19:15:53,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138049836] [2024-10-12 19:15:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138049836] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628455562] [2024-10-12 19:15:53,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:53,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:53,072 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) [2024-10-12 19:15:53,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 19:15:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:53,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:15:53,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:53,461 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:53,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628455562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:53,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:53,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-10-12 19:15:53,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203986261] [2024-10-12 19:15:53,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:53,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:15:53,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:15:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-10-12 19:15:53,463 INFO L87 Difference]: Start difference. First operand 1465 states and 2451 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:53,829 INFO L93 Difference]: Finished difference Result 2780 states and 4670 transitions. [2024-10-12 19:15:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:15:53,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2024-10-12 19:15:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:53,838 INFO L225 Difference]: With dead ends: 2780 [2024-10-12 19:15:53,838 INFO L226 Difference]: Without dead ends: 1483 [2024-10-12 19:15:53,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-10-12 19:15:53,843 INFO L432 NwaCegarLoop]: 845 mSDtfsCounter, 113 mSDsluCounter, 4976 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 5821 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:53,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 5821 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:53,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2024-10-12 19:15:54,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1465. [2024-10-12 19:15:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1152 states have (on average 1.6675347222222223) internal successors, (1921), 1203 states have internal predecessors, (1921), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2024-10-12 19:15:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2451 transitions. [2024-10-12 19:15:54,144 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2451 transitions. Word has length 112 [2024-10-12 19:15:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:54,146 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 2451 transitions. [2024-10-12 19:15:54,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2451 transitions. [2024-10-12 19:15:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-12 19:15:54,149 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:54,149 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:54,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 19:15:54,350 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,SelfDestructingSolverStorable13 [2024-10-12 19:15:54,350 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:54,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 2020706384, now seen corresponding path program 1 times [2024-10-12 19:15:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67712490] [2024-10-12 19:15:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-12 19:15:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-12 19:15:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:15:54,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67712490] [2024-10-12 19:15:54,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67712490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:54,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522412679] [2024-10-12 19:15:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:54,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:54,893 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) [2024-10-12 19:15:54,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 19:15:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:55,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 1785 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:15:55,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 19:15:55,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:55,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522412679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:55,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:55,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:15:55,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250055345] [2024-10-12 19:15:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:55,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:15:55,225 INFO L87 Difference]: Start difference. First operand 1465 states and 2451 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:55,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:55,482 INFO L93 Difference]: Finished difference Result 2832 states and 4755 transitions. [2024-10-12 19:15:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:15:55,482 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2024-10-12 19:15:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:55,492 INFO L225 Difference]: With dead ends: 2832 [2024-10-12 19:15:55,492 INFO L226 Difference]: Without dead ends: 1465 [2024-10-12 19:15:55,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-12 19:15:55,498 INFO L432 NwaCegarLoop]: 851 mSDtfsCounter, 13 mSDsluCounter, 1698 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2549 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:55,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2549 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:55,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2024-10-12 19:15:55,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1465. [2024-10-12 19:15:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1152 states have (on average 1.6640625) internal successors, (1917), 1203 states have internal predecessors, (1917), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2024-10-12 19:15:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2447 transitions. [2024-10-12 19:15:55,739 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2447 transitions. Word has length 112 [2024-10-12 19:15:55,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:55,739 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 2447 transitions. [2024-10-12 19:15:55,739 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2447 transitions. [2024-10-12 19:15:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-10-12 19:15:55,742 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:55,742 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:55,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 19:15:55,942 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,SelfDestructingSolverStorable14 [2024-10-12 19:15:55,943 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:55,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash -727218349, now seen corresponding path program 1 times [2024-10-12 19:15:55,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:55,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632171835] [2024-10-12 19:15:55,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:55,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-12 19:15:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 19:15:56,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:56,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632171835] [2024-10-12 19:15:56,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632171835] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:56,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566119946] [2024-10-12 19:15:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:56,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:56,462 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) [2024-10-12 19:15:56,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 19:15:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:56,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 19:15:56,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:15:56,858 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:56,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566119946] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:56,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:56,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-10-12 19:15:56,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980592733] [2024-10-12 19:15:56,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:56,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:15:56,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:56,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:15:56,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:15:56,860 INFO L87 Difference]: Start difference. First operand 1465 states and 2447 transitions. Second operand has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:57,248 INFO L93 Difference]: Finished difference Result 2780 states and 4667 transitions. [2024-10-12 19:15:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:15:57,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2024-10-12 19:15:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:57,260 INFO L225 Difference]: With dead ends: 2780 [2024-10-12 19:15:57,260 INFO L226 Difference]: Without dead ends: 1483 [2024-10-12 19:15:57,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:15:57,267 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 121 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 5777 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:57,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 5777 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:15:57,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2024-10-12 19:15:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1465. [2024-10-12 19:15:57,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1152 states have (on average 1.6640625) internal successors, (1917), 1203 states have internal predecessors, (1917), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2024-10-12 19:15:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 2447 transitions. [2024-10-12 19:15:57,581 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 2447 transitions. Word has length 113 [2024-10-12 19:15:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:57,581 INFO L471 AbstractCegarLoop]: Abstraction has 1465 states and 2447 transitions. [2024-10-12 19:15:57,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:15:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 2447 transitions. [2024-10-12 19:15:57,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-12 19:15:57,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:57,585 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:57,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 19:15:57,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:57,786 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:57,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:57,787 INFO L85 PathProgramCache]: Analyzing trace with hash -412824877, now seen corresponding path program 1 times [2024-10-12 19:15:57,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:57,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299830399] [2024-10-12 19:15:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:15:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:15:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:15:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 19:15:58,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:15:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299830399] [2024-10-12 19:15:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299830399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:15:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597943616] [2024-10-12 19:15:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:58,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:15:58,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:15:58,365 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) [2024-10-12 19:15:58,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 19:15:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:58,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 1783 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:15:58,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:15:58,701 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:15:58,701 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:15:58,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597943616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:15:58,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:15:58,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-10-12 19:15:58,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113131939] [2024-10-12 19:15:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:15:58,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:15:58,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:15:58,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:15:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:58,703 INFO L87 Difference]: Start difference. First operand 1465 states and 2447 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:15:58,962 INFO L93 Difference]: Finished difference Result 2874 states and 4821 transitions. [2024-10-12 19:15:58,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:15:58,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-10-12 19:15:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:15:58,972 INFO L225 Difference]: With dead ends: 2874 [2024-10-12 19:15:58,972 INFO L226 Difference]: Without dead ends: 1489 [2024-10-12 19:15:58,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:15:58,977 INFO L432 NwaCegarLoop]: 845 mSDtfsCounter, 6 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:15:58,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2524 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:15:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2024-10-12 19:15:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1489. [2024-10-12 19:15:59,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1176 states have (on average 1.6539115646258504) internal successors, (1945), 1227 states have internal predecessors, (1945), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2024-10-12 19:15:59,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2475 transitions. [2024-10-12 19:15:59,240 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2475 transitions. Word has length 114 [2024-10-12 19:15:59,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:15:59,241 INFO L471 AbstractCegarLoop]: Abstraction has 1489 states and 2475 transitions. [2024-10-12 19:15:59,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:15:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2475 transitions. [2024-10-12 19:15:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-12 19:15:59,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:15:59,243 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:15:59,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 19:15:59,444 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,SelfDestructingSolverStorable16 [2024-10-12 19:15:59,445 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:15:59,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:15:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1503756789, now seen corresponding path program 1 times [2024-10-12 19:15:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:15:59,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929683953] [2024-10-12 19:15:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:15:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:15:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:15:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:15:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:15:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:15:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:15:59,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:15:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:00,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:00,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-12 19:16:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:00,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:00,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:16:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:00,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929683953] [2024-10-12 19:16:00,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929683953] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:00,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20761022] [2024-10-12 19:16:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:00,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:00,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:00,030 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) [2024-10-12 19:16:00,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 19:16:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:00,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 19:16:00,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-12 19:16:00,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:00,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20761022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:00,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:00,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-10-12 19:16:00,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519095729] [2024-10-12 19:16:00,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:00,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:16:00,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:00,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:16:00,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:16:00,357 INFO L87 Difference]: Start difference. First operand 1489 states and 2475 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:16:00,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:00,576 INFO L93 Difference]: Finished difference Result 2786 states and 4673 transitions. [2024-10-12 19:16:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:16:00,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2024-10-12 19:16:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:00,585 INFO L225 Difference]: With dead ends: 2786 [2024-10-12 19:16:00,585 INFO L226 Difference]: Without dead ends: 1495 [2024-10-12 19:16:00,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-10-12 19:16:00,590 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 0 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:00,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2571 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:16:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2024-10-12 19:16:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1495. [2024-10-12 19:16:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1182 states have (on average 1.6505922165820643) internal successors, (1951), 1233 states have internal predecessors, (1951), 246 states have call successors, (246), 59 states have call predecessors, (246), 66 states have return successors, (284), 238 states have call predecessors, (284), 241 states have call successors, (284) [2024-10-12 19:16:00,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2481 transitions. [2024-10-12 19:16:00,815 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2481 transitions. Word has length 114 [2024-10-12 19:16:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:00,816 INFO L471 AbstractCegarLoop]: Abstraction has 1495 states and 2481 transitions. [2024-10-12 19:16:00,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:16:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2481 transitions. [2024-10-12 19:16:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-12 19:16:00,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:00,819 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:00,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-12 19:16:01,019 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,SelfDestructingSolverStorable17 [2024-10-12 19:16:01,020 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:01,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1384885278, now seen corresponding path program 1 times [2024-10-12 19:16:01,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:01,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750312106] [2024-10-12 19:16:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:01,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-12 19:16:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-12 19:16:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 19:16:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-12 19:16:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 19:16:01,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750312106] [2024-10-12 19:16:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750312106] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:01,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486117281] [2024-10-12 19:16:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:01,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:01,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:01,643 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) [2024-10-12 19:16:01,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 19:16:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:01,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 19:16:01,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 19:16:02,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:02,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486117281] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:02,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:02,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2024-10-12 19:16:02,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550203615] [2024-10-12 19:16:02,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:02,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 19:16:02,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 19:16:02,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-12 19:16:02,184 INFO L87 Difference]: Start difference. First operand 1495 states and 2481 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-12 19:16:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:04,831 INFO L93 Difference]: Finished difference Result 3409 states and 5734 transitions. [2024-10-12 19:16:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 19:16:04,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2024-10-12 19:16:04,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:04,845 INFO L225 Difference]: With dead ends: 3409 [2024-10-12 19:16:04,845 INFO L226 Difference]: Without dead ends: 2111 [2024-10-12 19:16:04,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-10-12 19:16:04,850 INFO L432 NwaCegarLoop]: 887 mSDtfsCounter, 3153 mSDsluCounter, 2913 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 3800 SdHoareTripleChecker+Invalid, 5247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:04,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3257 Valid, 3800 Invalid, 5247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 4589 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 19:16:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2024-10-12 19:16:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2086. [2024-10-12 19:16:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 1627 states have (on average 1.6441303011677935) internal successors, (2675), 1699 states have internal predecessors, (2675), 366 states have call successors, (366), 76 states have call predecessors, (366), 92 states have return successors, (430), 363 states have call predecessors, (430), 361 states have call successors, (430) [2024-10-12 19:16:05,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 3471 transitions. [2024-10-12 19:16:05,230 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 3471 transitions. Word has length 117 [2024-10-12 19:16:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:05,231 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 3471 transitions. [2024-10-12 19:16:05,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-12 19:16:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 3471 transitions. [2024-10-12 19:16:05,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-10-12 19:16:05,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:05,234 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] [2024-10-12 19:16:05,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-12 19:16:05,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:05,435 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:05,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1298114308, now seen corresponding path program 1 times [2024-10-12 19:16:05,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:05,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126312452] [2024-10-12 19:16:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:05,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:05,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:05,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:05,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:05,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-12 19:16:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:05,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:05,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:16:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-12 19:16:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 19:16:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-12 19:16:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 19:16:06,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:06,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126312452] [2024-10-12 19:16:06,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126312452] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:06,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394183732] [2024-10-12 19:16:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:06,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:06,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:06,133 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) [2024-10-12 19:16:06,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 19:16:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:06,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 19:16:06,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-12 19:16:06,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394183732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:06,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2024-10-12 19:16:06,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772416564] [2024-10-12 19:16:06,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:06,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:16:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:06,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:16:06,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:16:06,557 INFO L87 Difference]: Start difference. First operand 2086 states and 3471 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:16:06,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:06,880 INFO L93 Difference]: Finished difference Result 4018 states and 6731 transitions. [2024-10-12 19:16:06,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 19:16:06,881 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2024-10-12 19:16:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:06,892 INFO L225 Difference]: With dead ends: 4018 [2024-10-12 19:16:06,892 INFO L226 Difference]: Without dead ends: 2122 [2024-10-12 19:16:06,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-10-12 19:16:06,898 INFO L432 NwaCegarLoop]: 844 mSDtfsCounter, 5 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:06,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2523 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 19:16:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2024-10-12 19:16:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2104. [2024-10-12 19:16:07,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 1645 states have (on average 1.6443768996960486) internal successors, (2705), 1717 states have internal predecessors, (2705), 366 states have call successors, (366), 76 states have call predecessors, (366), 92 states have return successors, (430), 363 states have call predecessors, (430), 361 states have call successors, (430) [2024-10-12 19:16:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3501 transitions. [2024-10-12 19:16:07,221 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3501 transitions. Word has length 120 [2024-10-12 19:16:07,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:07,222 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3501 transitions. [2024-10-12 19:16:07,222 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-12 19:16:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3501 transitions. [2024-10-12 19:16:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 19:16:07,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:07,227 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 19:16:07,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-12 19:16:07,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:07,428 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:07,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1772625586, now seen corresponding path program 1 times [2024-10-12 19:16:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100497416] [2024-10-12 19:16:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-12 19:16:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:07,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:16:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:16:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 19:16:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-12 19:16:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 19:16:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:08,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100497416] [2024-10-12 19:16:08,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100497416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:08,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704646369] [2024-10-12 19:16:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:08,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:08,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:08,203 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) [2024-10-12 19:16:08,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 19:16:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:08,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 19:16:08,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 19:16:08,650 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704646369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:08,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:08,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2024-10-12 19:16:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832347156] [2024-10-12 19:16:08,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:08,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-12 19:16:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 19:16:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2024-10-12 19:16:08,653 INFO L87 Difference]: Start difference. First operand 2104 states and 3501 transitions. Second operand has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:16:09,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:09,069 INFO L93 Difference]: Finished difference Result 3959 states and 6625 transitions. [2024-10-12 19:16:09,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 19:16:09,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2024-10-12 19:16:09,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:09,083 INFO L225 Difference]: With dead ends: 3959 [2024-10-12 19:16:09,083 INFO L226 Difference]: Without dead ends: 2167 [2024-10-12 19:16:09,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2024-10-12 19:16:09,091 INFO L432 NwaCegarLoop]: 839 mSDtfsCounter, 89 mSDsluCounter, 4958 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5797 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:09,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5797 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:16:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2024-10-12 19:16:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2106. [2024-10-12 19:16:09,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1646 states have (on average 1.643377885783718) internal successors, (2705), 1719 states have internal predecessors, (2705), 366 states have call successors, (366), 76 states have call predecessors, (366), 93 states have return successors, (431), 363 states have call predecessors, (431), 361 states have call successors, (431) [2024-10-12 19:16:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3502 transitions. [2024-10-12 19:16:09,580 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3502 transitions. Word has length 121 [2024-10-12 19:16:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:09,581 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 3502 transitions. [2024-10-12 19:16:09,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:16:09,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3502 transitions. [2024-10-12 19:16:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 19:16:09,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:09,586 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] [2024-10-12 19:16:09,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-12 19:16:09,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:09,788 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:09,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:09,788 INFO L85 PathProgramCache]: Analyzing trace with hash -651566736, now seen corresponding path program 1 times [2024-10-12 19:16:09,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:09,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433523195] [2024-10-12 19:16:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-12 19:16:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:16:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:16:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 19:16:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-12 19:16:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 19:16:10,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:10,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433523195] [2024-10-12 19:16:10,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433523195] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172794629] [2024-10-12 19:16:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:10,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:10,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:10,444 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) [2024-10-12 19:16:10,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 19:16:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:10,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 19:16:10,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-12 19:16:10,866 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172794629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:10,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-10-12 19:16:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849445935] [2024-10-12 19:16:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:10,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 19:16:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 19:16:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:16:10,869 INFO L87 Difference]: Start difference. First operand 2106 states and 3502 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:16:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 19:16:11,314 INFO L93 Difference]: Finished difference Result 3667 states and 6185 transitions. [2024-10-12 19:16:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 19:16:11,315 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), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2024-10-12 19:16:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 19:16:11,332 INFO L225 Difference]: With dead ends: 3667 [2024-10-12 19:16:11,332 INFO L226 Difference]: Without dead ends: 2124 [2024-10-12 19:16:11,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-12 19:16:11,340 INFO L432 NwaCegarLoop]: 881 mSDtfsCounter, 306 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 19:16:11,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2436 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 19:16:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2024-10-12 19:16:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2106. [2024-10-12 19:16:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1646 states have (on average 1.6330498177399757) internal successors, (2688), 1719 states have internal predecessors, (2688), 366 states have call successors, (366), 76 states have call predecessors, (366), 93 states have return successors, (431), 363 states have call predecessors, (431), 361 states have call successors, (431) [2024-10-12 19:16:11,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3485 transitions. [2024-10-12 19:16:11,771 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3485 transitions. Word has length 121 [2024-10-12 19:16:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 19:16:11,772 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 3485 transitions. [2024-10-12 19:16:11,772 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), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-12 19:16:11,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3485 transitions. [2024-10-12 19:16:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-12 19:16:11,776 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 19:16:11,776 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] [2024-10-12 19:16:11,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-12 19:16:11,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-12 19:16:11,981 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 19:16:11,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 19:16:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash -75901189, now seen corresponding path program 1 times [2024-10-12 19:16:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 19:16:11,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704816248] [2024-10-12 19:16:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 19:16:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 19:16:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 19:16:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-12 19:16:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 19:16:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-12 19:16:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-12 19:16:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 19:16:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 19:16:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-12 19:16:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-12 19:16:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 19:16:12,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 19:16:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704816248] [2024-10-12 19:16:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704816248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 19:16:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331349780] [2024-10-12 19:16:12,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 19:16:12,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 19:16:12,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 19:16:12,587 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) [2024-10-12 19:16:12,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-12 19:16:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 19:16:12,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 19:16:12,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 19:16:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-12 19:16:13,059 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 19:16:13,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331349780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 19:16:13,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 19:16:13,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-10-12 19:16:13,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631550977] [2024-10-12 19:16:13,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 19:16:13,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 19:16:13,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 19:16:13,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 19:16:13,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-12 19:16:13,061 INFO L87 Difference]: Start difference. First operand 2106 states and 3485 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13)