./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product20.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 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:58:54,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:58:54,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:58:54,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:58:54,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:58:54,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:58:54,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:58:54,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:58:54,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:58:54,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:58:54,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:58:54,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:58:54,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:58:54,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:58:54,495 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:58:54,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:58:54,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:58:54,496 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:58:54,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:58:54,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:58:54,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:58:54,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:58:54,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:58:54,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:58:54,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:58:54,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:58:54,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:58:54,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:58:54,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:58:54,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:58:54,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:58:54,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:58:54,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:58:54,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:58:54,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:58:54,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:58:54,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:58:54,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:58:54,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:58:54,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:58:54,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:58:54,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:58:54,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f11976cf57fe8d65e71fe2317840ceb817472b70b756607274947c31f43df4d [2024-11-18 13:58:54,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:58:54,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:58:54,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:58:54,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:58:54,748 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:58:54,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2024-11-18 13:58:56,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:58:56,310 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:58:56,314 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2024-11-18 13:58:56,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1932423/9abae36172634233abe5d013c2532b1b/FLAGa55243c52 [2024-11-18 13:58:56,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c1932423/9abae36172634233abe5d013c2532b1b [2024-11-18 13:58:56,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:58:56,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:58:56,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:58:56,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:58:56,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:58:56,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:58:56" (1/1) ... [2024-11-18 13:58:56,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a04dc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:56, skipping insertion in model container [2024-11-18 13:58:56,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:58:56" (1/1) ... [2024-11-18 13:58:56,445 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:58:56,828 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2024-11-18 13:58:56,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:58:56,888 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:58:56,895 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2024-11-18 13:58:56,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1639] [2024-11-18 13:58:56,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2005] [2024-11-18 13:58:56,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2021] [2024-11-18 13:58:56,897 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2059] [2024-11-18 13:58:56,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2068] [2024-11-18 13:58:56,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2162] [2024-11-18 13:58:56,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2828] [2024-11-18 13:58:56,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3180] [2024-11-18 13:58:56,898 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3361] [2024-11-18 13:58:56,975 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2024-11-18 13:58:56,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:58:57,021 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:58:57,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57 WrapperNode [2024-11-18 13:58:57,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:58:57,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:58:57,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:58:57,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:58:57,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,084 INFO L138 Inliner]: procedures = 96, calls = 347, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1122 [2024-11-18 13:58:57,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:58:57,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:58:57,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:58:57,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:58:57,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,104 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,141 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-11-18 13:58:57,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,142 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:58:57,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:58:57,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:58:57,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:58:57,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (1/1) ... [2024-11-18 13:58:57,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:58:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:57,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:58:57,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:58:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-18 13:58:57,263 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-18 13:58:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:58:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-18 13:58:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-18 13:58:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-18 13:58:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-18 13:58:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-18 13:58:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2024-11-18 13:58:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-18 13:58:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-18 13:58:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-18 13:58:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-18 13:58:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-18 13:58:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-18 13:58:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-18 13:58:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-18 13:58:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-18 13:58:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-18 13:58:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-18 13:58:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-18 13:58:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-18 13:58:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-18 13:58:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-18 13:58:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-18 13:58:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-18 13:58:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-18 13:58:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-18 13:58:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-18 13:58:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-18 13:58:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-18 13:58:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-18 13:58:57,271 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-18 13:58:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-18 13:58:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-18 13:58:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-18 13:58:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-18 13:58:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-18 13:58:57,272 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-18 13:58:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-18 13:58:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-18 13:58:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-18 13:58:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-18 13:58:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-18 13:58:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-18 13:58:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-18 13:58:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-18 13:58:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-18 13:58:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-18 13:58:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-18 13:58:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-11-18 13:58:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-11-18 13:58:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-11-18 13:58:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-11-18 13:58:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-11-18 13:58:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-18 13:58:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-18 13:58:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-18 13:58:57,277 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-18 13:58:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-18 13:58:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-18 13:58:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:58:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:58:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-18 13:58:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-18 13:58:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-18 13:58:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-18 13:58:57,421 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:58:57,424 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:58:58,380 INFO L? ?]: Removed 451 outVars from TransFormulas that were not future-live. [2024-11-18 13:58:58,380 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:58:58,407 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:58:58,408 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:58:58,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:58:58 BoogieIcfgContainer [2024-11-18 13:58:58,408 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:58:58,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:58:58,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:58:58,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:58:58,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:58:56" (1/3) ... [2024-11-18 13:58:58,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a09113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:58:58, skipping insertion in model container [2024-11-18 13:58:58,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:57" (2/3) ... [2024-11-18 13:58:58,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a09113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:58:58, skipping insertion in model container [2024-11-18 13:58:58,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:58:58" (3/3) ... [2024-11-18 13:58:58,416 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2024-11-18 13:58:58,429 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:58:58,429 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:58:58,496 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:58:58,502 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;@4f175b86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:58:58,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:58:58,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 576 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 469 states have internal predecessors, (750), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-18 13:58:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-18 13:58:58,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:58,529 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] [2024-11-18 13:58:58,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:58,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1248911478, now seen corresponding path program 1 times [2024-11-18 13:58:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:58,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344485288] [2024-11-18 13:58:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:58,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:59,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:59,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:59,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344485288] [2024-11-18 13:58:59,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344485288] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:59,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511302698] [2024-11-18 13:58:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:59,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:59,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:59,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:59,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:58:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:59,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:58:59,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:58:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:58:59,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:58:59,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511302698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:58:59,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:58:59,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2024-11-18 13:58:59,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556105821] [2024-11-18 13:58:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:58:59,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:58:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:58:59,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:58:59,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:58:59,421 INFO L87 Difference]: Start difference. First operand has 576 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 469 states have internal predecessors, (750), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 13:58:59,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:58:59,490 INFO L93 Difference]: Finished difference Result 597 states and 984 transitions. [2024-11-18 13:58:59,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:58:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2024-11-18 13:58:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:58:59,511 INFO L225 Difference]: With dead ends: 597 [2024-11-18 13:58:59,511 INFO L226 Difference]: Without dead ends: 568 [2024-11-18 13:58:59,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:58:59,524 INFO L432 NwaCegarLoop]: 945 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:58:59,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:58:59,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-18 13:58:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-18 13:58:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 440 states have (on average 1.6795454545454545) internal successors, (739), 461 states have internal predecessors, (739), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:58:59,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 938 transitions. [2024-11-18 13:58:59,591 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 938 transitions. Word has length 83 [2024-11-18 13:58:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:58:59,595 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 938 transitions. [2024-11-18 13:58:59,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-18 13:58:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 938 transitions. [2024-11-18 13:58:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-18 13:58:59,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:58:59,602 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] [2024-11-18 13:58:59,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:58:59,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 13:58:59,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:58:59,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:58:59,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2012184022, now seen corresponding path program 1 times [2024-11-18 13:58:59,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:58:59,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315642648] [2024-11-18 13:58:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:59,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:58:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:58:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:58:59,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:58:59,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315642648] [2024-11-18 13:58:59,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315642648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:58:59,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515323823] [2024-11-18 13:58:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:58:59,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:58:59,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:58:59,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:58:59,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:59:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:00,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:00,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:00,302 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:00,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515323823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:00,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:00,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:00,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994108406] [2024-11-18 13:59:00,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:00,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:00,305 INFO L87 Difference]: Start difference. First operand 568 states and 938 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:00,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:00,371 INFO L93 Difference]: Finished difference Result 1127 states and 1868 transitions. [2024-11-18 13:59:00,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:59:00,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2024-11-18 13:59:00,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:00,375 INFO L225 Difference]: With dead ends: 1127 [2024-11-18 13:59:00,375 INFO L226 Difference]: Without dead ends: 568 [2024-11-18 13:59:00,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:00,384 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 5 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:00,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2772 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:00,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-18 13:59:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-18 13:59:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 440 states have (on average 1.6772727272727272) internal successors, (738), 461 states have internal predecessors, (738), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 937 transitions. [2024-11-18 13:59:00,424 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 937 transitions. Word has length 85 [2024-11-18 13:59:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:00,425 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 937 transitions. [2024-11-18 13:59:00,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 937 transitions. [2024-11-18 13:59:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-18 13:59:00,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:00,429 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] [2024-11-18 13:59:00,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:59:00,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 13:59:00,631 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:00,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1579016016, now seen corresponding path program 1 times [2024-11-18 13:59:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483151222] [2024-11-18 13:59:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:59:00,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:00,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483151222] [2024-11-18 13:59:00,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483151222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:00,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552910758] [2024-11-18 13:59:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:00,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:00,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:00,864 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:00,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:59:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:01,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:01,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:01,206 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:01,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552910758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:01,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:01,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:01,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327045738] [2024-11-18 13:59:01,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:01,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:01,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:01,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:01,215 INFO L87 Difference]: Start difference. First operand 568 states and 937 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:01,278 INFO L93 Difference]: Finished difference Result 1127 states and 1866 transitions. [2024-11-18 13:59:01,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:59:01,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2024-11-18 13:59:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:01,285 INFO L225 Difference]: With dead ends: 1127 [2024-11-18 13:59:01,285 INFO L226 Difference]: Without dead ends: 568 [2024-11-18 13:59:01,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:01,289 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 4 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:01,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2772 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-18 13:59:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2024-11-18 13:59:01,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 440 states have (on average 1.675) internal successors, (737), 461 states have internal predecessors, (737), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 936 transitions. [2024-11-18 13:59:01,318 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 936 transitions. Word has length 87 [2024-11-18 13:59:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:01,318 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 936 transitions. [2024-11-18 13:59:01,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 936 transitions. [2024-11-18 13:59:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-18 13:59:01,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:01,322 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] [2024-11-18 13:59:01,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:01,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:01,523 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:01,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:01,524 INFO L85 PathProgramCache]: Analyzing trace with hash 762396586, now seen corresponding path program 1 times [2024-11-18 13:59:01,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995980756] [2024-11-18 13:59:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:59:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995980756] [2024-11-18 13:59:01,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995980756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:01,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951187341] [2024-11-18 13:59:01,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:01,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:01,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:01,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:01,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:59:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:01,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:01,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:01,936 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:01,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951187341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:01,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511361265] [2024-11-18 13:59:01,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:01,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:01,938 INFO L87 Difference]: Start difference. First operand 568 states and 936 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:01,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:01,993 INFO L93 Difference]: Finished difference Result 1134 states and 1873 transitions. [2024-11-18 13:59:01,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:01,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-11-18 13:59:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:01,997 INFO L225 Difference]: With dead ends: 1134 [2024-11-18 13:59:01,997 INFO L226 Difference]: Without dead ends: 577 [2024-11-18 13:59:01,999 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:02,000 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 13 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:02,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2769 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:02,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-18 13:59:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2024-11-18 13:59:02,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.671875) internal successors, (749), 469 states have internal predecessors, (749), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 948 transitions. [2024-11-18 13:59:02,015 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 948 transitions. Word has length 89 [2024-11-18 13:59:02,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:02,016 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 948 transitions. [2024-11-18 13:59:02,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:02,016 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 948 transitions. [2024-11-18 13:59:02,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 13:59:02,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:02,017 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] [2024-11-18 13:59:02,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:02,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:02,218 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:02,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2127369749, now seen corresponding path program 1 times [2024-11-18 13:59:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:02,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146480557] [2024-11-18 13:59:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:02,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:59:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146480557] [2024-11-18 13:59:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146480557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600027772] [2024-11-18 13:59:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:02,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:02,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:02,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:02,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:59:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:02,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:02,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:02,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:02,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600027772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:02,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:02,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:02,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880204200] [2024-11-18 13:59:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:02,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:02,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:02,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:02,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:02,551 INFO L87 Difference]: Start difference. First operand 577 states and 948 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:02,598 INFO L93 Difference]: Finished difference Result 1136 states and 1874 transitions. [2024-11-18 13:59:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:02,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2024-11-18 13:59:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:02,602 INFO L225 Difference]: With dead ends: 1136 [2024-11-18 13:59:02,602 INFO L226 Difference]: Without dead ends: 577 [2024-11-18 13:59:02,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:02,604 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 11 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:02,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2769 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-18 13:59:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2024-11-18 13:59:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.6696428571428572) internal successors, (748), 469 states have internal predecessors, (748), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 947 transitions. [2024-11-18 13:59:02,618 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 947 transitions. Word has length 90 [2024-11-18 13:59:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:02,619 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 947 transitions. [2024-11-18 13:59:02,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 947 transitions. [2024-11-18 13:59:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-18 13:59:02,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:02,620 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] [2024-11-18 13:59:02,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:59:02,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:02,821 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:02,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1952395982, now seen corresponding path program 1 times [2024-11-18 13:59:02,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:02,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859354122] [2024-11-18 13:59:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:02,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:59:02,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:02,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859354122] [2024-11-18 13:59:02,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859354122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:02,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352182394] [2024-11-18 13:59:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:02,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:02,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:02,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:59:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:03,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:03,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:03,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:03,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352182394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:03,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:03,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:03,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474247896] [2024-11-18 13:59:03,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:03,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:03,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:03,191 INFO L87 Difference]: Start difference. First operand 577 states and 947 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:03,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:03,238 INFO L93 Difference]: Finished difference Result 1136 states and 1873 transitions. [2024-11-18 13:59:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:03,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-11-18 13:59:03,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:03,242 INFO L225 Difference]: With dead ends: 1136 [2024-11-18 13:59:03,242 INFO L226 Difference]: Without dead ends: 577 [2024-11-18 13:59:03,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:03,245 INFO L432 NwaCegarLoop]: 925 mSDtfsCounter, 10 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:03,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2769 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:03,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-18 13:59:03,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2024-11-18 13:59:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.6674107142857142) internal successors, (747), 469 states have internal predecessors, (747), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 946 transitions. [2024-11-18 13:59:03,264 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 946 transitions. Word has length 91 [2024-11-18 13:59:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:03,264 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 946 transitions. [2024-11-18 13:59:03,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 946 transitions. [2024-11-18 13:59:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-18 13:59:03,266 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:03,266 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:03,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:59:03,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:03,467 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:03,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1250643633, now seen corresponding path program 1 times [2024-11-18 13:59:03,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:03,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235236205] [2024-11-18 13:59:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:03,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:03,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235236205] [2024-11-18 13:59:03,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235236205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574731288] [2024-11-18 13:59:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:03,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:03,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:03,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:59:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:03,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:03,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:59:03,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:03,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574731288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:03,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:03,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:59:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869242343] [2024-11-18 13:59:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:03,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:03,915 INFO L87 Difference]: Start difference. First operand 577 states and 946 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:04,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:04,016 INFO L93 Difference]: Finished difference Result 1162 states and 1920 transitions. [2024-11-18 13:59:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:59:04,017 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2024-11-18 13:59:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:04,020 INFO L225 Difference]: With dead ends: 1162 [2024-11-18 13:59:04,020 INFO L226 Difference]: Without dead ends: 592 [2024-11-18 13:59:04,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:04,022 INFO L432 NwaCegarLoop]: 900 mSDtfsCounter, 76 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:04,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2660 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-18 13:59:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 577. [2024-11-18 13:59:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.65625) internal successors, (742), 469 states have internal predecessors, (742), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 941 transitions. [2024-11-18 13:59:04,035 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 941 transitions. Word has length 92 [2024-11-18 13:59:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:04,035 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 941 transitions. [2024-11-18 13:59:04,035 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 941 transitions. [2024-11-18 13:59:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 13:59:04,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:04,036 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] [2024-11-18 13:59:04,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:59:04,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:04,237 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:04,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1295945999, now seen corresponding path program 1 times [2024-11-18 13:59:04,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:04,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134893413] [2024-11-18 13:59:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:04,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134893413] [2024-11-18 13:59:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134893413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823957937] [2024-11-18 13:59:04,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:04,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:04,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:04,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:59:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:04,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:04,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:04,664 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:59:04,664 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:04,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823957937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:04,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:04,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:59:04,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907193595] [2024-11-18 13:59:04,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:04,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:04,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:04,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:04,667 INFO L87 Difference]: Start difference. First operand 577 states and 941 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:04,781 INFO L93 Difference]: Finished difference Result 1162 states and 1910 transitions. [2024-11-18 13:59:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:59:04,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2024-11-18 13:59:04,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:04,786 INFO L225 Difference]: With dead ends: 1162 [2024-11-18 13:59:04,786 INFO L226 Difference]: Without dead ends: 592 [2024-11-18 13:59:04,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:04,789 INFO L432 NwaCegarLoop]: 900 mSDtfsCounter, 75 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:04,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2660 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-18 13:59:04,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 577. [2024-11-18 13:59:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 448 states have (on average 1.6450892857142858) internal successors, (737), 469 states have internal predecessors, (737), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 936 transitions. [2024-11-18 13:59:04,807 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 936 transitions. Word has length 94 [2024-11-18 13:59:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:04,807 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 936 transitions. [2024-11-18 13:59:04,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 936 transitions. [2024-11-18 13:59:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 13:59:04,809 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:04,809 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] [2024-11-18 13:59:04,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:05,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 13:59:05,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:05,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2050201809, now seen corresponding path program 1 times [2024-11-18 13:59:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:05,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427458329] [2024-11-18 13:59:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:05,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427458329] [2024-11-18 13:59:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427458329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721072313] [2024-11-18 13:59:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:05,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:05,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:05,150 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:05,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:59:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:05,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:05,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:59:05,428 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:05,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721072313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:05,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:05,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:59:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194105003] [2024-11-18 13:59:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:05,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:05,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:05,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:05,430 INFO L87 Difference]: Start difference. First operand 577 states and 936 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:05,564 INFO L93 Difference]: Finished difference Result 1213 states and 1983 transitions. [2024-11-18 13:59:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:05,565 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2024-11-18 13:59:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:05,569 INFO L225 Difference]: With dead ends: 1213 [2024-11-18 13:59:05,569 INFO L226 Difference]: Without dead ends: 658 [2024-11-18 13:59:05,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:05,571 INFO L432 NwaCegarLoop]: 933 mSDtfsCounter, 130 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:05,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2691 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-18 13:59:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 628. [2024-11-18 13:59:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 498 states have (on average 1.6506024096385543) internal successors, (822), 519 states have internal predecessors, (822), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1021 transitions. [2024-11-18 13:59:05,585 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1021 transitions. Word has length 96 [2024-11-18 13:59:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:05,586 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 1021 transitions. [2024-11-18 13:59:05,586 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1021 transitions. [2024-11-18 13:59:05,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 13:59:05,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:05,587 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] [2024-11-18 13:59:05,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:59:05,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:05,788 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:05,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1006669816, now seen corresponding path program 1 times [2024-11-18 13:59:05,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:05,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613241637] [2024-11-18 13:59:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:05,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:05,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:05,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613241637] [2024-11-18 13:59:05,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613241637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:05,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928912586] [2024-11-18 13:59:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:05,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:05,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:05,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:05,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:59:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:06,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:06,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:59:06,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:06,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928912586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:06,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:06,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-18 13:59:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850952501] [2024-11-18 13:59:06,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:06,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:06,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:06,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:06,238 INFO L87 Difference]: Start difference. First operand 628 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:06,367 INFO L93 Difference]: Finished difference Result 1228 states and 2007 transitions. [2024-11-18 13:59:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:06,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2024-11-18 13:59:06,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:06,371 INFO L225 Difference]: With dead ends: 1228 [2024-11-18 13:59:06,371 INFO L226 Difference]: Without dead ends: 658 [2024-11-18 13:59:06,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:06,374 INFO L432 NwaCegarLoop]: 932 mSDtfsCounter, 124 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:06,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2664 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-18 13:59:06,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 628. [2024-11-18 13:59:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 498 states have (on average 1.640562248995984) internal successors, (817), 519 states have internal predecessors, (817), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-18 13:59:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1016 transitions. [2024-11-18 13:59:06,388 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1016 transitions. Word has length 97 [2024-11-18 13:59:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:06,388 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 1016 transitions. [2024-11-18 13:59:06,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:06,388 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1016 transitions. [2024-11-18 13:59:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 13:59:06,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:06,390 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] [2024-11-18 13:59:06,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 13:59:06,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 13:59:06,594 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:06,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash -467547977, now seen corresponding path program 1 times [2024-11-18 13:59:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311818026] [2024-11-18 13:59:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:06,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:06,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311818026] [2024-11-18 13:59:06,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311818026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:06,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965276613] [2024-11-18 13:59:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:06,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:06,711 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:06,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 13:59:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:06,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:59:06,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:59:07,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:07,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965276613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:07,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:07,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-18 13:59:07,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279327948] [2024-11-18 13:59:07,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:07,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:59:07,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:07,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:59:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:59:07,046 INFO L87 Difference]: Start difference. First operand 628 states and 1016 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:07,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:07,158 INFO L93 Difference]: Finished difference Result 1221 states and 1987 transitions. [2024-11-18 13:59:07,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:59:07,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-18 13:59:07,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:07,162 INFO L225 Difference]: With dead ends: 1221 [2024-11-18 13:59:07,162 INFO L226 Difference]: Without dead ends: 666 [2024-11-18 13:59:07,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:59:07,166 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 113 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6253 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:07,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6253 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-18 13:59:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 647. [2024-11-18 13:59:07,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 514 states have (on average 1.640077821011673) internal successors, (843), 537 states have internal predecessors, (843), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2024-11-18 13:59:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1046 transitions. [2024-11-18 13:59:07,183 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1046 transitions. Word has length 97 [2024-11-18 13:59:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:07,184 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 1046 transitions. [2024-11-18 13:59:07,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1046 transitions. [2024-11-18 13:59:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-18 13:59:07,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:07,185 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] [2024-11-18 13:59:07,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 13:59:07,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 13:59:07,386 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:07,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1038799210, now seen corresponding path program 1 times [2024-11-18 13:59:07,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:07,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70497144] [2024-11-18 13:59:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:07,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70497144] [2024-11-18 13:59:07,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70497144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931095776] [2024-11-18 13:59:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:07,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:07,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:07,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:07,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 13:59:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:07,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:59:07,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:07,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931095776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:59:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430190317] [2024-11-18 13:59:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:07,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:59:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:59:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:07,792 INFO L87 Difference]: Start difference. First operand 647 states and 1046 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:07,910 INFO L93 Difference]: Finished difference Result 1159 states and 1887 transitions. [2024-11-18 13:59:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:59:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2024-11-18 13:59:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:07,921 INFO L225 Difference]: With dead ends: 1159 [2024-11-18 13:59:07,921 INFO L226 Difference]: Without dead ends: 671 [2024-11-18 13:59:07,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:07,925 INFO L432 NwaCegarLoop]: 919 mSDtfsCounter, 86 mSDsluCounter, 4516 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5435 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:07,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5435 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-18 13:59:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 666. [2024-11-18 13:59:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.639622641509434) internal successors, (869), 555 states have internal predecessors, (869), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-18 13:59:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1076 transitions. [2024-11-18 13:59:07,959 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1076 transitions. Word has length 97 [2024-11-18 13:59:07,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:07,962 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1076 transitions. [2024-11-18 13:59:07,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:07,963 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1076 transitions. [2024-11-18 13:59:07,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 13:59:07,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:07,964 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] [2024-11-18 13:59:07,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:08,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 13:59:08,165 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:08,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2133277604, now seen corresponding path program 1 times [2024-11-18 13:59:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:08,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071199470] [2024-11-18 13:59:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:08,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-18 13:59:08,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071199470] [2024-11-18 13:59:08,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071199470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:08,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462363979] [2024-11-18 13:59:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:08,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:08,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:08,345 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:08,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 13:59:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:08,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:59:08,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:08,683 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462363979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:08,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:08,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-18 13:59:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478538104] [2024-11-18 13:59:08,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:08,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:59:08,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:59:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:08,685 INFO L87 Difference]: Start difference. First operand 666 states and 1076 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:08,751 INFO L93 Difference]: Finished difference Result 1189 states and 1938 transitions. [2024-11-18 13:59:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:59:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2024-11-18 13:59:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:08,755 INFO L225 Difference]: With dead ends: 1189 [2024-11-18 13:59:08,756 INFO L226 Difference]: Without dead ends: 701 [2024-11-18 13:59:08,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:08,758 INFO L432 NwaCegarLoop]: 919 mSDtfsCounter, 95 mSDsluCounter, 4506 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5425 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:08,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5425 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-18 13:59:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 666. [2024-11-18 13:59:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.639622641509434) internal successors, (869), 555 states have internal predecessors, (869), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-18 13:59:08,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1076 transitions. [2024-11-18 13:59:08,778 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1076 transitions. Word has length 98 [2024-11-18 13:59:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:08,778 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1076 transitions. [2024-11-18 13:59:08,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1076 transitions. [2024-11-18 13:59:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 13:59:08,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:08,779 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] [2024-11-18 13:59:08,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 13:59:08,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 13:59:08,980 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:08,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:08,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1983906012, now seen corresponding path program 1 times [2024-11-18 13:59:08,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:08,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100114883] [2024-11-18 13:59:08,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:08,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:59:09,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100114883] [2024-11-18 13:59:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100114883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701183504] [2024-11-18 13:59:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:09,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:09,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:09,102 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:09,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 13:59:09,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:09,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:59:09,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:09,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:09,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701183504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:09,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:09,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:59:09,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169259898] [2024-11-18 13:59:09,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:09,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:59:09,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:59:09,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:09,460 INFO L87 Difference]: Start difference. First operand 666 states and 1076 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:09,592 INFO L93 Difference]: Finished difference Result 1174 states and 1912 transitions. [2024-11-18 13:59:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:59:09,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2024-11-18 13:59:09,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:09,597 INFO L225 Difference]: With dead ends: 1174 [2024-11-18 13:59:09,597 INFO L226 Difference]: Without dead ends: 686 [2024-11-18 13:59:09,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:59:09,599 INFO L432 NwaCegarLoop]: 908 mSDtfsCounter, 113 mSDsluCounter, 5353 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6261 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:09,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6261 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-18 13:59:09,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 666. [2024-11-18 13:59:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.639622641509434) internal successors, (869), 555 states have internal predecessors, (869), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-18 13:59:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1076 transitions. [2024-11-18 13:59:09,618 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1076 transitions. Word has length 98 [2024-11-18 13:59:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:09,618 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1076 transitions. [2024-11-18 13:59:09,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1076 transitions. [2024-11-18 13:59:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 13:59:09,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:09,620 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] [2024-11-18 13:59:09,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:09,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:09,822 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:09,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:09,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1693855001, now seen corresponding path program 1 times [2024-11-18 13:59:09,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:09,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991973034] [2024-11-18 13:59:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:09,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:09,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:09,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991973034] [2024-11-18 13:59:09,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991973034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:09,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973361926] [2024-11-18 13:59:09,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:09,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:09,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:09,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:09,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 13:59:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:10,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:10,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:59:10,190 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973361926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:10,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126368163] [2024-11-18 13:59:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:10,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:10,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:10,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:10,192 INFO L87 Difference]: Start difference. First operand 666 states and 1076 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:10,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:10,228 INFO L93 Difference]: Finished difference Result 1226 states and 1997 transitions. [2024-11-18 13:59:10,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:10,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2024-11-18 13:59:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:10,232 INFO L225 Difference]: With dead ends: 1226 [2024-11-18 13:59:10,232 INFO L226 Difference]: Without dead ends: 666 [2024-11-18 13:59:10,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:10,234 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 13 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:10,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2738 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2024-11-18 13:59:10,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2024-11-18 13:59:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 530 states have (on average 1.6320754716981132) internal successors, (865), 555 states have internal predecessors, (865), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-18 13:59:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1072 transitions. [2024-11-18 13:59:10,247 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1072 transitions. Word has length 98 [2024-11-18 13:59:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:10,248 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1072 transitions. [2024-11-18 13:59:10,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1072 transitions. [2024-11-18 13:59:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-18 13:59:10,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:10,249 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] [2024-11-18 13:59:10,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:10,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 13:59:10,450 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:10,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1433704046, now seen corresponding path program 1 times [2024-11-18 13:59:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:10,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970823391] [2024-11-18 13:59:10,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:10,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:59:10,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:10,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970823391] [2024-11-18 13:59:10,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970823391] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:10,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743037576] [2024-11-18 13:59:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:10,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:10,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:10,575 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:10,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 13:59:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:10,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:59:10,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 13:59:10,837 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743037576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:10,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-18 13:59:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534156869] [2024-11-18 13:59:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:10,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:10,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:10,838 INFO L87 Difference]: Start difference. First operand 666 states and 1072 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:10,913 INFO L93 Difference]: Finished difference Result 1270 states and 2065 transitions. [2024-11-18 13:59:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:59:10,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2024-11-18 13:59:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:10,919 INFO L225 Difference]: With dead ends: 1270 [2024-11-18 13:59:10,919 INFO L226 Difference]: Without dead ends: 690 [2024-11-18 13:59:10,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 13:59:10,921 INFO L432 NwaCegarLoop]: 908 mSDtfsCounter, 7 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:10,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2711 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2024-11-18 13:59:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2024-11-18 13:59:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 554 states have (on average 1.611913357400722) internal successors, (893), 579 states have internal predecessors, (893), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-18 13:59:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1100 transitions. [2024-11-18 13:59:10,936 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1100 transitions. Word has length 99 [2024-11-18 13:59:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:10,937 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1100 transitions. [2024-11-18 13:59:10,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 13:59:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1100 transitions. [2024-11-18 13:59:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 13:59:10,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:10,938 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] [2024-11-18 13:59:10,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:11,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-18 13:59:11,139 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:11,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:11,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1202009774, now seen corresponding path program 1 times [2024-11-18 13:59:11,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:11,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508339587] [2024-11-18 13:59:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:11,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-18 13:59:11,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:11,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508339587] [2024-11-18 13:59:11,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508339587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386169639] [2024-11-18 13:59:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:11,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:11,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:11,233 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:11,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 13:59:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:11,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 13:59:11,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:59:11,533 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386169639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:59:11,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817666230] [2024-11-18 13:59:11,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:11,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:59:11,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:59:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:11,535 INFO L87 Difference]: Start difference. First operand 690 states and 1100 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:11,647 INFO L93 Difference]: Finished difference Result 1204 states and 1944 transitions. [2024-11-18 13:59:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:59:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2024-11-18 13:59:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:11,651 INFO L225 Difference]: With dead ends: 1204 [2024-11-18 13:59:11,651 INFO L226 Difference]: Without dead ends: 716 [2024-11-18 13:59:11,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:59:11,653 INFO L432 NwaCegarLoop]: 902 mSDtfsCounter, 119 mSDsluCounter, 5315 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6217 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:11,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 6217 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:11,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-18 13:59:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 690. [2024-11-18 13:59:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 554 states have (on average 1.611913357400722) internal successors, (893), 579 states have internal predecessors, (893), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2024-11-18 13:59:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1100 transitions. [2024-11-18 13:59:11,668 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1100 transitions. Word has length 100 [2024-11-18 13:59:11,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:11,668 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1100 transitions. [2024-11-18 13:59:11,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1100 transitions. [2024-11-18 13:59:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 13:59:11,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:11,670 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] [2024-11-18 13:59:11,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-18 13:59:11,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 13:59:11,872 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:11,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash -548448926, now seen corresponding path program 1 times [2024-11-18 13:59:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679514752] [2024-11-18 13:59:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 13:59:11,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:11,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679514752] [2024-11-18 13:59:11,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679514752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:11,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102167286] [2024-11-18 13:59:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:11,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:11,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:11,929 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:11,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 13:59:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:12,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 13:59:12,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 13:59:12,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102167286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:12,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:12,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2024-11-18 13:59:12,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685443628] [2024-11-18 13:59:12,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:12,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:59:12,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:12,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:59:12,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:12,492 INFO L87 Difference]: Start difference. First operand 690 states and 1100 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:14,988 INFO L93 Difference]: Finished difference Result 2244 states and 3699 transitions. [2024-11-18 13:59:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:59:14,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2024-11-18 13:59:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:14,995 INFO L225 Difference]: With dead ends: 2244 [2024-11-18 13:59:14,995 INFO L226 Difference]: Without dead ends: 1761 [2024-11-18 13:59:14,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:14,997 INFO L432 NwaCegarLoop]: 605 mSDtfsCounter, 2837 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 3824 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3020 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 4364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 3824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:14,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3020 Valid, 1688 Invalid, 4364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 3824 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-18 13:59:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2024-11-18 13:59:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1574. [2024-11-18 13:59:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1249 states have (on average 1.6525220176140913) internal successors, (2064), 1292 states have internal predecessors, (2064), 259 states have call successors, (259), 60 states have call predecessors, (259), 65 states have return successors, (268), 236 states have call predecessors, (268), 254 states have call successors, (268) [2024-11-18 13:59:15,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2591 transitions. [2024-11-18 13:59:15,039 INFO L78 Accepts]: Start accepts. Automaton has 1574 states and 2591 transitions. Word has length 100 [2024-11-18 13:59:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:15,042 INFO L471 AbstractCegarLoop]: Abstraction has 1574 states and 2591 transitions. [2024-11-18 13:59:15,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 13:59:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1574 states and 2591 transitions. [2024-11-18 13:59:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-18 13:59:15,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:15,045 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:15,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-18 13:59:15,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 13:59:15,250 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:15,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:15,250 INFO L85 PathProgramCache]: Analyzing trace with hash -278522964, now seen corresponding path program 1 times [2024-11-18 13:59:15,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:15,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743966688] [2024-11-18 13:59:15,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:15,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:59:15,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:15,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743966688] [2024-11-18 13:59:15,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743966688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:15,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486415285] [2024-11-18 13:59:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:15,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:15,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:15,324 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:15,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-18 13:59:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:15,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:59:15,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-18 13:59:15,840 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:15,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486415285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:15,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:15,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2024-11-18 13:59:15,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783847353] [2024-11-18 13:59:15,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:15,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:59:15,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:15,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:59:15,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:15,841 INFO L87 Difference]: Start difference. First operand 1574 states and 2591 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 13:59:18,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:18,557 INFO L93 Difference]: Finished difference Result 4208 states and 6979 transitions. [2024-11-18 13:59:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 13:59:18,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 152 [2024-11-18 13:59:18,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:18,571 INFO L225 Difference]: With dead ends: 4208 [2024-11-18 13:59:18,571 INFO L226 Difference]: Without dead ends: 2681 [2024-11-18 13:59:18,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-18 13:59:18,579 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 1699 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 5120 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 5380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 5120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:18,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 2086 Invalid, 5380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 5120 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 13:59:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2024-11-18 13:59:18,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2461. [2024-11-18 13:59:18,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1927 states have (on average 1.6320705760249092) internal successors, (3145), 1979 states have internal predecessors, (3145), 425 states have call successors, (425), 89 states have call predecessors, (425), 108 states have return successors, (468), 403 states have call predecessors, (468), 420 states have call successors, (468) [2024-11-18 13:59:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 4038 transitions. [2024-11-18 13:59:18,656 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 4038 transitions. Word has length 152 [2024-11-18 13:59:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:18,656 INFO L471 AbstractCegarLoop]: Abstraction has 2461 states and 4038 transitions. [2024-11-18 13:59:18,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-18 13:59:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 4038 transitions. [2024-11-18 13:59:18,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-18 13:59:18,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:18,660 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:18,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:18,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:18,865 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:18,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1619415799, now seen corresponding path program 1 times [2024-11-18 13:59:18,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:18,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347507014] [2024-11-18 13:59:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:59:18,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347507014] [2024-11-18 13:59:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347507014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:18,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174217766] [2024-11-18 13:59:18,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:18,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:18,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:18,968 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:18,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-18 13:59:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:19,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:59:19,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:19,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174217766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:19,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:19,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:59:19,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040476362] [2024-11-18 13:59:19,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:19,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:59:19,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:59:19,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:19,414 INFO L87 Difference]: Start difference. First operand 2461 states and 4038 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:19,844 INFO L93 Difference]: Finished difference Result 4763 states and 7996 transitions. [2024-11-18 13:59:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:59:19,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2024-11-18 13:59:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:19,855 INFO L225 Difference]: With dead ends: 4763 [2024-11-18 13:59:19,855 INFO L226 Difference]: Without dead ends: 2509 [2024-11-18 13:59:19,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:19,864 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 867 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:19,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2326 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:59:19,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2024-11-18 13:59:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2509. [2024-11-18 13:59:19,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1969 states have (on average 1.633824276282377) internal successors, (3217), 2021 states have internal predecessors, (3217), 425 states have call successors, (425), 95 states have call predecessors, (425), 114 states have return successors, (473), 403 states have call predecessors, (473), 420 states have call successors, (473) [2024-11-18 13:59:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 4115 transitions. [2024-11-18 13:59:19,948 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 4115 transitions. Word has length 153 [2024-11-18 13:59:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:19,948 INFO L471 AbstractCegarLoop]: Abstraction has 2509 states and 4115 transitions. [2024-11-18 13:59:19,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 4115 transitions. [2024-11-18 13:59:19,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-18 13:59:19,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:19,953 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:19,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:20,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:20,154 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:20,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1804319117, now seen corresponding path program 1 times [2024-11-18 13:59:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49680035] [2024-11-18 13:59:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:20,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-18 13:59:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:20,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49680035] [2024-11-18 13:59:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49680035] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708024287] [2024-11-18 13:59:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:20,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:20,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:20,225 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:20,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-18 13:59:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:20,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:59:20,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:20,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:20,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708024287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:20,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:20,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:59:20,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467489961] [2024-11-18 13:59:20,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:20,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:59:20,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:20,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:59:20,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:20,676 INFO L87 Difference]: Start difference. First operand 2509 states and 4115 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:21,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:21,123 INFO L93 Difference]: Finished difference Result 4859 states and 8134 transitions. [2024-11-18 13:59:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:59:21,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2024-11-18 13:59:21,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:21,135 INFO L225 Difference]: With dead ends: 4859 [2024-11-18 13:59:21,136 INFO L226 Difference]: Without dead ends: 2557 [2024-11-18 13:59:21,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:21,146 INFO L432 NwaCegarLoop]: 903 mSDtfsCounter, 851 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:21,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2323 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 13:59:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2024-11-18 13:59:21,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 2557. [2024-11-18 13:59:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2011 states have (on average 1.6355047240179015) internal successors, (3289), 2063 states have internal predecessors, (3289), 425 states have call successors, (425), 101 states have call predecessors, (425), 120 states have return successors, (478), 403 states have call predecessors, (478), 420 states have call successors, (478) [2024-11-18 13:59:21,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 4192 transitions. [2024-11-18 13:59:21,218 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 4192 transitions. Word has length 155 [2024-11-18 13:59:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:21,218 INFO L471 AbstractCegarLoop]: Abstraction has 2557 states and 4192 transitions. [2024-11-18 13:59:21,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 4192 transitions. [2024-11-18 13:59:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-18 13:59:21,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:21,222 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:21,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-18 13:59:21,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:21,423 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:21,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:21,423 INFO L85 PathProgramCache]: Analyzing trace with hash 626842359, now seen corresponding path program 1 times [2024-11-18 13:59:21,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:21,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443127380] [2024-11-18 13:59:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:21,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443127380] [2024-11-18 13:59:21,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443127380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:21,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604772997] [2024-11-18 13:59:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:21,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:21,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:21,495 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:21,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-18 13:59:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:21,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:59:21,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:21,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604772997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:21,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:21,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:59:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961415615] [2024-11-18 13:59:21,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:21,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:59:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:59:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:21,932 INFO L87 Difference]: Start difference. First operand 2557 states and 4192 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:22,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:22,351 INFO L93 Difference]: Finished difference Result 4955 states and 8272 transitions. [2024-11-18 13:59:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:59:22,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2024-11-18 13:59:22,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:22,364 INFO L225 Difference]: With dead ends: 4955 [2024-11-18 13:59:22,365 INFO L226 Difference]: Without dead ends: 2605 [2024-11-18 13:59:22,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:22,374 INFO L432 NwaCegarLoop]: 900 mSDtfsCounter, 855 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:22,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2320 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:59:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2024-11-18 13:59:22,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2605. [2024-11-18 13:59:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2053 states have (on average 1.6371164150024355) internal successors, (3361), 2105 states have internal predecessors, (3361), 425 states have call successors, (425), 107 states have call predecessors, (425), 126 states have return successors, (483), 403 states have call predecessors, (483), 420 states have call successors, (483) [2024-11-18 13:59:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4269 transitions. [2024-11-18 13:59:22,517 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4269 transitions. Word has length 157 [2024-11-18 13:59:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:22,517 INFO L471 AbstractCegarLoop]: Abstraction has 2605 states and 4269 transitions. [2024-11-18 13:59:22,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4269 transitions. [2024-11-18 13:59:22,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-18 13:59:22,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:22,521 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:22,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-18 13:59:22,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:22,722 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:22,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:22,722 INFO L85 PathProgramCache]: Analyzing trace with hash 341410693, now seen corresponding path program 1 times [2024-11-18 13:59:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:22,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56143762] [2024-11-18 13:59:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:59:22,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:22,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56143762] [2024-11-18 13:59:22,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56143762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:22,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141563895] [2024-11-18 13:59:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:22,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:22,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:22,830 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-18 13:59:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:23,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:59:23,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:23,282 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:23,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141563895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:23,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:23,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:59:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926116386] [2024-11-18 13:59:23,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:23,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:59:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:59:23,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:23,284 INFO L87 Difference]: Start difference. First operand 2605 states and 4269 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:23,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:23,690 INFO L93 Difference]: Finished difference Result 5051 states and 8410 transitions. [2024-11-18 13:59:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:59:23,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2024-11-18 13:59:23,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:23,703 INFO L225 Difference]: With dead ends: 5051 [2024-11-18 13:59:23,703 INFO L226 Difference]: Without dead ends: 2653 [2024-11-18 13:59:23,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:23,711 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 848 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:23,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 2317 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:59:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2653 states. [2024-11-18 13:59:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2653 to 2653. [2024-11-18 13:59:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2095 states have (on average 1.6386634844868735) internal successors, (3433), 2147 states have internal predecessors, (3433), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-11-18 13:59:23,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 4346 transitions. [2024-11-18 13:59:23,782 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 4346 transitions. Word has length 159 [2024-11-18 13:59:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:23,782 INFO L471 AbstractCegarLoop]: Abstraction has 2653 states and 4346 transitions. [2024-11-18 13:59:23,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:23,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 4346 transitions. [2024-11-18 13:59:23,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 13:59:23,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:23,786 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:23,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:23,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:23,987 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:23,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:23,988 INFO L85 PathProgramCache]: Analyzing trace with hash -182456073, now seen corresponding path program 1 times [2024-11-18 13:59:23,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:23,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888756086] [2024-11-18 13:59:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:23,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:24,066 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:59:24,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:24,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888756086] [2024-11-18 13:59:24,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888756086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:24,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296213617] [2024-11-18 13:59:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:24,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:24,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:24,069 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:24,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-18 13:59:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:24,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:59:24,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:24,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 13:59:24,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:24,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296213617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:24,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:24,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-18 13:59:24,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194536473] [2024-11-18 13:59:24,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:24,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:59:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:24,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:59:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:24,545 INFO L87 Difference]: Start difference. First operand 2653 states and 4346 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 13:59:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:24,862 INFO L93 Difference]: Finished difference Result 2768 states and 4536 transitions. [2024-11-18 13:59:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:24,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2024-11-18 13:59:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:24,875 INFO L225 Difference]: With dead ends: 2768 [2024-11-18 13:59:24,875 INFO L226 Difference]: Without dead ends: 2753 [2024-11-18 13:59:24,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:24,877 INFO L432 NwaCegarLoop]: 920 mSDtfsCounter, 873 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:24,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1673 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:59:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2024-11-18 13:59:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2662. [2024-11-18 13:59:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2662 states, 2104 states have (on average 1.6359315589353611) internal successors, (3442), 2156 states have internal predecessors, (3442), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2024-11-18 13:59:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2662 states to 2662 states and 4355 transitions. [2024-11-18 13:59:24,956 INFO L78 Accepts]: Start accepts. Automaton has 2662 states and 4355 transitions. Word has length 161 [2024-11-18 13:59:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:24,957 INFO L471 AbstractCegarLoop]: Abstraction has 2662 states and 4355 transitions. [2024-11-18 13:59:24,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-18 13:59:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2662 states and 4355 transitions. [2024-11-18 13:59:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-18 13:59:24,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:24,960 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:24,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-18 13:59:25,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:25,162 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:25,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:25,163 INFO L85 PathProgramCache]: Analyzing trace with hash -914555150, now seen corresponding path program 1 times [2024-11-18 13:59:25,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:25,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189474923] [2024-11-18 13:59:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:25,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:59:25,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189474923] [2024-11-18 13:59:25,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189474923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:25,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074102003] [2024-11-18 13:59:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:25,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:25,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:25,240 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:25,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-18 13:59:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:25,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 13:59:25,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 13:59:25,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:25,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074102003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:25,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:25,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-18 13:59:25,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16250588] [2024-11-18 13:59:25,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:25,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:59:25,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:25,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:59:25,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:25,636 INFO L87 Difference]: Start difference. First operand 2662 states and 4355 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:25,986 INFO L93 Difference]: Finished difference Result 2864 states and 4643 transitions. [2024-11-18 13:59:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:59:25,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2024-11-18 13:59:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:25,996 INFO L225 Difference]: With dead ends: 2864 [2024-11-18 13:59:25,997 INFO L226 Difference]: Without dead ends: 2849 [2024-11-18 13:59:25,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:25,998 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 851 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:25,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 3620 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:59:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2024-11-18 13:59:26,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2828. [2024-11-18 13:59:26,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2828 states, 2238 states have (on average 1.6291331546023236) internal successors, (3646), 2290 states have internal predecessors, (3646), 441 states have call successors, (441), 131 states have call predecessors, (441), 148 states have return successors, (507), 417 states have call predecessors, (507), 436 states have call successors, (507) [2024-11-18 13:59:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4594 transitions. [2024-11-18 13:59:26,075 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4594 transitions. Word has length 167 [2024-11-18 13:59:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:26,075 INFO L471 AbstractCegarLoop]: Abstraction has 2828 states and 4594 transitions. [2024-11-18 13:59:26,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-18 13:59:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4594 transitions. [2024-11-18 13:59:26,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-18 13:59:26,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:26,079 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:26,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:26,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-18 13:59:26,284 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:26,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1391110426, now seen corresponding path program 1 times [2024-11-18 13:59:26,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:26,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201776029] [2024-11-18 13:59:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:26,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 13:59:26,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201776029] [2024-11-18 13:59:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201776029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921649521] [2024-11-18 13:59:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:26,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:26,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:26,387 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:26,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-18 13:59:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:26,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 2165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:59:26,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-18 13:59:26,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921649521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 13:59:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537107017] [2024-11-18 13:59:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:26,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:59:26,716 INFO L87 Difference]: Start difference. First operand 2828 states and 4594 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:59:26,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:26,825 INFO L93 Difference]: Finished difference Result 5630 states and 9158 transitions. [2024-11-18 13:59:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2024-11-18 13:59:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:26,838 INFO L225 Difference]: With dead ends: 5630 [2024-11-18 13:59:26,838 INFO L226 Difference]: Without dead ends: 2797 [2024-11-18 13:59:26,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:59:26,846 INFO L432 NwaCegarLoop]: 916 mSDtfsCounter, 7 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:26,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2741 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2024-11-18 13:59:26,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2797. [2024-11-18 13:59:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2210 states have (on average 1.6289592760180995) internal successors, (3600), 2260 states have internal predecessors, (3600), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-11-18 13:59:26,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4544 transitions. [2024-11-18 13:59:26,962 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4544 transitions. Word has length 178 [2024-11-18 13:59:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:26,962 INFO L471 AbstractCegarLoop]: Abstraction has 2797 states and 4544 transitions. [2024-11-18 13:59:26,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:59:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4544 transitions. [2024-11-18 13:59:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-18 13:59:26,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:26,966 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:26,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-18 13:59:27,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-18 13:59:27,167 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:27,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1755884593, now seen corresponding path program 1 times [2024-11-18 13:59:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614213107] [2024-11-18 13:59:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:27,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-18 13:59:27,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:27,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614213107] [2024-11-18 13:59:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614213107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:27,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023017693] [2024-11-18 13:59:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:27,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:27,316 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:27,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-18 13:59:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:27,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 2168 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-18 13:59:27,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:27,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023017693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:27,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:27,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2024-11-18 13:59:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135079150] [2024-11-18 13:59:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:27,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:59:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:59:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:27,664 INFO L87 Difference]: Start difference. First operand 2797 states and 4544 transitions. Second operand has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:27,797 INFO L93 Difference]: Finished difference Result 5563 states and 9052 transitions. [2024-11-18 13:59:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:59:27,798 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2024-11-18 13:59:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:27,812 INFO L225 Difference]: With dead ends: 5563 [2024-11-18 13:59:27,812 INFO L226 Difference]: Without dead ends: 2797 [2024-11-18 13:59:27,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:27,822 INFO L432 NwaCegarLoop]: 934 mSDtfsCounter, 119 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5478 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:27,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5478 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:27,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2797 states. [2024-11-18 13:59:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2797 to 2776. [2024-11-18 13:59:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2189 states have (on average 1.6290543627227045) internal successors, (3566), 2239 states have internal predecessors, (3566), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-11-18 13:59:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4510 transitions. [2024-11-18 13:59:28,048 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4510 transitions. Word has length 180 [2024-11-18 13:59:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:28,049 INFO L471 AbstractCegarLoop]: Abstraction has 2776 states and 4510 transitions. [2024-11-18 13:59:28,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:28,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4510 transitions. [2024-11-18 13:59:28,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-18 13:59:28,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:28,054 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:28,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:28,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-18 13:59:28,255 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:28,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2068561484, now seen corresponding path program 1 times [2024-11-18 13:59:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:28,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115862316] [2024-11-18 13:59:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:28,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:59:28,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:28,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115862316] [2024-11-18 13:59:28,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115862316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:28,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109188225] [2024-11-18 13:59:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:28,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:28,396 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:28,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-18 13:59:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:28,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 2174 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:59:28,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 13:59:28,744 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:28,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109188225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:28,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:28,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 13:59:28,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366657527] [2024-11-18 13:59:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:28,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:28,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:28,746 INFO L87 Difference]: Start difference. First operand 2776 states and 4510 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:59:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:28,877 INFO L93 Difference]: Finished difference Result 5545 states and 9022 transitions. [2024-11-18 13:59:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2024-11-18 13:59:28,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:28,891 INFO L225 Difference]: With dead ends: 5545 [2024-11-18 13:59:28,891 INFO L226 Difference]: Without dead ends: 2800 [2024-11-18 13:59:28,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:59:28,898 INFO L432 NwaCegarLoop]: 899 mSDtfsCounter, 128 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:28,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2620 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2024-11-18 13:59:28,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2776. [2024-11-18 13:59:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2189 states have (on average 1.628597533120146) internal successors, (3565), 2239 states have internal predecessors, (3565), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2024-11-18 13:59:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4509 transitions. [2024-11-18 13:59:28,982 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4509 transitions. Word has length 182 [2024-11-18 13:59:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:28,982 INFO L471 AbstractCegarLoop]: Abstraction has 2776 states and 4509 transitions. [2024-11-18 13:59:28,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:59:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4509 transitions. [2024-11-18 13:59:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-18 13:59:28,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:28,987 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:29,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-18 13:59:29,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-18 13:59:29,188 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:29,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1112083105, now seen corresponding path program 1 times [2024-11-18 13:59:29,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:29,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245933694] [2024-11-18 13:59:29,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:29,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 13:59:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:29,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245933694] [2024-11-18 13:59:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245933694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:29,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:59:29,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:59:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627475072] [2024-11-18 13:59:29,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:29,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:29,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:59:29,298 INFO L87 Difference]: Start difference. First operand 2776 states and 4509 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:59:29,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:29,380 INFO L93 Difference]: Finished difference Result 5480 states and 8931 transitions. [2024-11-18 13:59:29,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:29,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 183 [2024-11-18 13:59:29,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:29,393 INFO L225 Difference]: With dead ends: 5480 [2024-11-18 13:59:29,393 INFO L226 Difference]: Without dead ends: 2736 [2024-11-18 13:59:29,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:59:29,401 INFO L432 NwaCegarLoop]: 914 mSDtfsCounter, 8 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2738 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:29,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2738 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:29,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2024-11-18 13:59:29,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2736. [2024-11-18 13:59:29,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2152 states have (on average 1.6273234200743494) internal successors, (3502), 2200 states have internal predecessors, (3502), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-18 13:59:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 4442 transitions. [2024-11-18 13:59:29,483 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 4442 transitions. Word has length 183 [2024-11-18 13:59:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:29,484 INFO L471 AbstractCegarLoop]: Abstraction has 2736 states and 4442 transitions. [2024-11-18 13:59:29,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-18 13:59:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 4442 transitions. [2024-11-18 13:59:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-18 13:59:29,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:29,488 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:29,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-18 13:59:29,488 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:29,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash 801648784, now seen corresponding path program 1 times [2024-11-18 13:59:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:29,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200977782] [2024-11-18 13:59:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:29,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-18 13:59:29,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:29,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200977782] [2024-11-18 13:59:29,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200977782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:29,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:59:29,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 13:59:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475569703] [2024-11-18 13:59:29,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:29,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:59:29,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:59:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:59:29,611 INFO L87 Difference]: Start difference. First operand 2736 states and 4442 transitions. Second operand has 7 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:29,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:29,712 INFO L93 Difference]: Finished difference Result 5383 states and 8770 transitions. [2024-11-18 13:59:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:59:29,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 184 [2024-11-18 13:59:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:29,725 INFO L225 Difference]: With dead ends: 5383 [2024-11-18 13:59:29,725 INFO L226 Difference]: Without dead ends: 2722 [2024-11-18 13:59:29,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:59:29,733 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 88 mSDsluCounter, 4407 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5304 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:29,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5304 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2024-11-18 13:59:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2722. [2024-11-18 13:59:29,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2138 states have (on average 1.6262862488306828) internal successors, (3477), 2186 states have internal predecessors, (3477), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-18 13:59:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 4417 transitions. [2024-11-18 13:59:29,920 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 4417 transitions. Word has length 184 [2024-11-18 13:59:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:29,921 INFO L471 AbstractCegarLoop]: Abstraction has 2722 states and 4417 transitions. [2024-11-18 13:59:29,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 4417 transitions. [2024-11-18 13:59:29,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-18 13:59:29,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:29,931 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:29,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-18 13:59:29,931 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:29,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:29,932 INFO L85 PathProgramCache]: Analyzing trace with hash -847674788, now seen corresponding path program 1 times [2024-11-18 13:59:29,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:29,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552798281] [2024-11-18 13:59:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:29,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:59:30,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:30,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552798281] [2024-11-18 13:59:30,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552798281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:30,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:59:30,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 13:59:30,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428774785] [2024-11-18 13:59:30,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:30,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:59:30,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:59:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:30,220 INFO L87 Difference]: Start difference. First operand 2722 states and 4417 transitions. Second operand has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:30,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:30,391 INFO L93 Difference]: Finished difference Result 5410 states and 8798 transitions. [2024-11-18 13:59:30,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 13:59:30,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2024-11-18 13:59:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:30,403 INFO L225 Difference]: With dead ends: 5410 [2024-11-18 13:59:30,404 INFO L226 Difference]: Without dead ends: 2713 [2024-11-18 13:59:30,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:59:30,410 INFO L432 NwaCegarLoop]: 857 mSDtfsCounter, 45 mSDsluCounter, 6809 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7666 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:30,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7666 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:30,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-18 13:59:30,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2713. [2024-11-18 13:59:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2129 states have (on average 1.6261155472052606) internal successors, (3462), 2177 states have internal predecessors, (3462), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-18 13:59:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 4402 transitions. [2024-11-18 13:59:30,537 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 4402 transitions. Word has length 185 [2024-11-18 13:59:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:30,538 INFO L471 AbstractCegarLoop]: Abstraction has 2713 states and 4402 transitions. [2024-11-18 13:59:30,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 4402 transitions. [2024-11-18 13:59:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-18 13:59:30,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:30,541 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:30,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-18 13:59:30,541 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:30,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:30,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1319748953, now seen corresponding path program 1 times [2024-11-18 13:59:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:30,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027722820] [2024-11-18 13:59:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:30,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:59:30,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:30,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027722820] [2024-11-18 13:59:30,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027722820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:30,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:59:30,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 13:59:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660271402] [2024-11-18 13:59:30,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:30,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 13:59:30,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:30,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 13:59:30,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-18 13:59:30,754 INFO L87 Difference]: Start difference. First operand 2713 states and 4402 transitions. Second operand has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:30,916 INFO L93 Difference]: Finished difference Result 5342 states and 8704 transitions. [2024-11-18 13:59:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 13:59:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 186 [2024-11-18 13:59:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:30,930 INFO L225 Difference]: With dead ends: 5342 [2024-11-18 13:59:30,931 INFO L226 Difference]: Without dead ends: 2707 [2024-11-18 13:59:30,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:59:30,939 INFO L432 NwaCegarLoop]: 866 mSDtfsCounter, 31 mSDsluCounter, 6018 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6884 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:30,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 6884 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:59:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2024-11-18 13:59:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2707. [2024-11-18 13:59:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2123 states have (on average 1.6274140367404617) internal successors, (3455), 2171 states have internal predecessors, (3455), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2024-11-18 13:59:31,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4395 transitions. [2024-11-18 13:59:31,018 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4395 transitions. Word has length 186 [2024-11-18 13:59:31,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:31,019 INFO L471 AbstractCegarLoop]: Abstraction has 2707 states and 4395 transitions. [2024-11-18 13:59:31,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 13:59:31,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4395 transitions. [2024-11-18 13:59:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-18 13:59:31,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:31,022 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:31,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-18 13:59:31,022 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:31,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash 144526743, now seen corresponding path program 1 times [2024-11-18 13:59:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:31,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934244106] [2024-11-18 13:59:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:31,491 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 13:59:31,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934244106] [2024-11-18 13:59:31,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934244106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332532928] [2024-11-18 13:59:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:31,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:31,496 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:31,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-18 13:59:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:31,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 13:59:31,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-18 13:59:32,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:32,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332532928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:32,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:32,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2024-11-18 13:59:32,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280610849] [2024-11-18 13:59:32,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:32,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 13:59:32,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 13:59:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-18 13:59:32,034 INFO L87 Difference]: Start difference. First operand 2707 states and 4395 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-18 13:59:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:33,388 INFO L93 Difference]: Finished difference Result 5417 states and 8837 transitions. [2024-11-18 13:59:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:59:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 186 [2024-11-18 13:59:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:33,402 INFO L225 Difference]: With dead ends: 5417 [2024-11-18 13:59:33,402 INFO L226 Difference]: Without dead ends: 2804 [2024-11-18 13:59:33,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:59:33,409 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 1769 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:33,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 1239 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2070 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 13:59:33,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2024-11-18 13:59:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2629. [2024-11-18 13:59:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2021 states have (on average 1.6120732310737258) internal successors, (3258), 2083 states have internal predecessors, (3258), 471 states have call successors, (471), 123 states have call predecessors, (471), 136 states have return successors, (520), 444 states have call predecessors, (520), 466 states have call successors, (520) [2024-11-18 13:59:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 4249 transitions. [2024-11-18 13:59:33,550 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 4249 transitions. Word has length 186 [2024-11-18 13:59:33,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:33,551 INFO L471 AbstractCegarLoop]: Abstraction has 2629 states and 4249 transitions. [2024-11-18 13:59:33,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-18 13:59:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 4249 transitions. [2024-11-18 13:59:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-18 13:59:33,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:33,554 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:33,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:33,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:33,756 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:33,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2073103655, now seen corresponding path program 1 times [2024-11-18 13:59:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:33,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183268425] [2024-11-18 13:59:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:33,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:33,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-18 13:59:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183268425] [2024-11-18 13:59:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183268425] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607497428] [2024-11-18 13:59:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:34,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:34,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:34,069 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:34,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-18 13:59:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:34,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 13:59:34,407 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 13:59:34,569 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607497428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-18 13:59:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060609347] [2024-11-18 13:59:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:34,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:59:34,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:59:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2024-11-18 13:59:34,571 INFO L87 Difference]: Start difference. First operand 2629 states and 4249 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-18 13:59:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:37,289 INFO L93 Difference]: Finished difference Result 9007 states and 14808 transitions. [2024-11-18 13:59:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:59:37,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 186 [2024-11-18 13:59:37,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:37,319 INFO L225 Difference]: With dead ends: 9007 [2024-11-18 13:59:37,319 INFO L226 Difference]: Without dead ends: 6472 [2024-11-18 13:59:37,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2024-11-18 13:59:37,332 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 2358 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 4760 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 2861 SdHoareTripleChecker+Invalid, 5295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 4760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:37,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2443 Valid, 2861 Invalid, 5295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 4760 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-18 13:59:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2024-11-18 13:59:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 6022. [2024-11-18 13:59:37,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6022 states, 4633 states have (on average 1.6227066695445715) internal successors, (7518), 4776 states have internal predecessors, (7518), 1061 states have call successors, (1061), 268 states have call predecessors, (1061), 327 states have return successors, (1262), 1021 states have call predecessors, (1262), 1056 states have call successors, (1262) [2024-11-18 13:59:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 9841 transitions. [2024-11-18 13:59:37,692 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 9841 transitions. Word has length 186 [2024-11-18 13:59:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:37,693 INFO L471 AbstractCegarLoop]: Abstraction has 6022 states and 9841 transitions. [2024-11-18 13:59:37,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-18 13:59:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 9841 transitions. [2024-11-18 13:59:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-18 13:59:37,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:37,696 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:37,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:37,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-18 13:59:37,897 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:37,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:37,897 INFO L85 PathProgramCache]: Analyzing trace with hash 173242649, now seen corresponding path program 1 times [2024-11-18 13:59:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:37,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969607548] [2024-11-18 13:59:37,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:37,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 13:59:38,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:38,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969607548] [2024-11-18 13:59:38,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969607548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:38,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890175323] [2024-11-18 13:59:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:38,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:38,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:38,200 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:38,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-18 13:59:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:38,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-18 13:59:38,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 13:59:38,710 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890175323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:38,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:38,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-18 13:59:38,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926121840] [2024-11-18 13:59:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:38,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:59:38,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:59:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:59:38,712 INFO L87 Difference]: Start difference. First operand 6022 states and 9841 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-18 13:59:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:41,252 INFO L93 Difference]: Finished difference Result 13048 states and 21500 transitions. [2024-11-18 13:59:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 13:59:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 188 [2024-11-18 13:59:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:41,296 INFO L225 Difference]: With dead ends: 13048 [2024-11-18 13:59:41,296 INFO L226 Difference]: Without dead ends: 7120 [2024-11-18 13:59:41,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-11-18 13:59:41,321 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 2103 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 3921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:41,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 2124 Invalid, 3921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 3424 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-18 13:59:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2024-11-18 13:59:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 6297. [2024-11-18 13:59:41,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6297 states, 4834 states have (on average 1.6150186181216384) internal successors, (7807), 4995 states have internal predecessors, (7807), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 365 states have return successors, (1395), 1062 states have call predecessors, (1395), 1092 states have call successors, (1395) [2024-11-18 13:59:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6297 states to 6297 states and 10299 transitions. [2024-11-18 13:59:41,669 INFO L78 Accepts]: Start accepts. Automaton has 6297 states and 10299 transitions. Word has length 188 [2024-11-18 13:59:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:41,669 INFO L471 AbstractCegarLoop]: Abstraction has 6297 states and 10299 transitions. [2024-11-18 13:59:41,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-18 13:59:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6297 states and 10299 transitions. [2024-11-18 13:59:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-18 13:59:41,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:41,675 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:41,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:41,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:41,880 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:41,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash -732783431, now seen corresponding path program 1 times [2024-11-18 13:59:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:41,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774916258] [2024-11-18 13:59:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 13:59:42,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:42,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774916258] [2024-11-18 13:59:42,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774916258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:42,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501423424] [2024-11-18 13:59:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:42,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:42,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:42,285 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:42,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-18 13:59:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:42,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 13:59:42,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-18 13:59:42,640 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:42,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501423424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:42,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:42,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2024-11-18 13:59:42,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305818152] [2024-11-18 13:59:42,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:42,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:59:42,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:42,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:59:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:59:42,641 INFO L87 Difference]: Start difference. First operand 6297 states and 10299 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 13:59:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:42,964 INFO L93 Difference]: Finished difference Result 15685 states and 25929 transitions. [2024-11-18 13:59:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:59:42,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 193 [2024-11-18 13:59:42,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:43,006 INFO L225 Difference]: With dead ends: 15685 [2024-11-18 13:59:43,007 INFO L226 Difference]: Without dead ends: 9486 [2024-11-18 13:59:43,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 13:59:43,029 INFO L432 NwaCegarLoop]: 1541 mSDtfsCounter, 791 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:43,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2414 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9486 states. [2024-11-18 13:59:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9486 to 6285. [2024-11-18 13:59:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6285 states, 4828 states have (on average 1.614540182270091) internal successors, (7795), 4983 states have internal predecessors, (7795), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 359 states have return successors, (1350), 1062 states have call predecessors, (1350), 1092 states have call successors, (1350) [2024-11-18 13:59:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 10242 transitions. [2024-11-18 13:59:43,448 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 10242 transitions. Word has length 193 [2024-11-18 13:59:43,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:43,450 INFO L471 AbstractCegarLoop]: Abstraction has 6285 states and 10242 transitions. [2024-11-18 13:59:43,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 13:59:43,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 10242 transitions. [2024-11-18 13:59:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-18 13:59:43,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:43,453 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:43,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:43,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:43,654 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:43,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1195489271, now seen corresponding path program 1 times [2024-11-18 13:59:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036693238] [2024-11-18 13:59:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:43,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 13:59:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036693238] [2024-11-18 13:59:43,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036693238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117040891] [2024-11-18 13:59:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:43,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:43,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:43,976 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:43,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-18 13:59:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:44,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-18 13:59:44,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 13:59:44,429 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117040891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:44,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2024-11-18 13:59:44,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127389955] [2024-11-18 13:59:44,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:44,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:59:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:59:44,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-18 13:59:44,431 INFO L87 Difference]: Start difference. First operand 6285 states and 10242 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-18 13:59:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:45,366 INFO L93 Difference]: Finished difference Result 12348 states and 20227 transitions. [2024-11-18 13:59:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:59:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 193 [2024-11-18 13:59:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:45,390 INFO L225 Difference]: With dead ends: 12348 [2024-11-18 13:59:45,390 INFO L226 Difference]: Without dead ends: 6149 [2024-11-18 13:59:45,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:59:45,404 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 1283 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:45,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 188 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 13:59:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2024-11-18 13:59:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 6149. [2024-11-18 13:59:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 4738 states have (on average 1.6070071760236386) internal successors, (7614), 4892 states have internal predecessors, (7614), 1051 states have call successors, (1051), 283 states have call predecessors, (1051), 359 states have return successors, (1305), 1017 states have call predecessors, (1305), 1047 states have call successors, (1305) [2024-11-18 13:59:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 9970 transitions. [2024-11-18 13:59:45,669 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 9970 transitions. Word has length 193 [2024-11-18 13:59:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:45,670 INFO L471 AbstractCegarLoop]: Abstraction has 6149 states and 9970 transitions. [2024-11-18 13:59:45,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-18 13:59:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 9970 transitions. [2024-11-18 13:59:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-18 13:59:45,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:45,673 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:45,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-18 13:59:45,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-18 13:59:45,878 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:45,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1594824795, now seen corresponding path program 1 times [2024-11-18 13:59:45,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:45,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348542658] [2024-11-18 13:59:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:45,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 13:59:46,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348542658] [2024-11-18 13:59:46,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348542658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:46,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141554299] [2024-11-18 13:59:46,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:46,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:46,154 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:46,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-18 13:59:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:46,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 2196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:59:46,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-18 13:59:46,535 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:59:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141554299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:59:46,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:59:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-18 13:59:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955634094] [2024-11-18 13:59:46,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:59:46,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:59:46,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:59:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:59:46,537 INFO L87 Difference]: Start difference. First operand 6149 states and 9970 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 13:59:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:59:46,915 INFO L93 Difference]: Finished difference Result 6211 states and 10050 transitions. [2024-11-18 13:59:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 13:59:46,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 194 [2024-11-18 13:59:46,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:59:46,950 INFO L225 Difference]: With dead ends: 6211 [2024-11-18 13:59:46,950 INFO L226 Difference]: Without dead ends: 6197 [2024-11-18 13:59:46,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-18 13:59:46,956 INFO L432 NwaCegarLoop]: 871 mSDtfsCounter, 0 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:59:46,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3469 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:59:46,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6197 states. [2024-11-18 13:59:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6197 to 6197. [2024-11-18 13:59:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6197 states, 4786 states have (on average 1.600919348098621) internal successors, (7662), 4940 states have internal predecessors, (7662), 1051 states have call successors, (1051), 283 states have call predecessors, (1051), 359 states have return successors, (1305), 1017 states have call predecessors, (1305), 1047 states have call successors, (1305) [2024-11-18 13:59:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 10018 transitions. [2024-11-18 13:59:47,432 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 10018 transitions. Word has length 194 [2024-11-18 13:59:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:59:47,433 INFO L471 AbstractCegarLoop]: Abstraction has 6197 states and 10018 transitions. [2024-11-18 13:59:47,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 13:59:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 10018 transitions. [2024-11-18 13:59:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-18 13:59:47,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:59:47,440 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:59:47,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-18 13:59:47,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-18 13:59:47,641 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:59:47,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:59:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash 575932554, now seen corresponding path program 1 times [2024-11-18 13:59:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:59:47,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982158930] [2024-11-18 13:59:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:47,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:59:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-18 13:59:48,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:59:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982158930] [2024-11-18 13:59:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982158930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:59:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294597806] [2024-11-18 13:59:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:59:48,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:59:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:59:48,049 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:59:48,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-18 13:59:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:59:48,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 2301 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:59:48,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:59:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-18 13:59:48,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:59:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-18 13:59:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294597806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:59:49,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:59:49,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2024-11-18 13:59:49,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016743534] [2024-11-18 13:59:49,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:59:49,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 13:59:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:59:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 13:59:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-18 13:59:49,256 INFO L87 Difference]: Start difference. First operand 6197 states and 10018 transitions. Second operand has 22 states, 22 states have (on average 14.727272727272727) internal successors, (324), 18 states have internal predecessors, (324), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-18 14:00:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:06,708 INFO L93 Difference]: Finished difference Result 56596 states and 95423 transitions. [2024-11-18 14:00:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-18 14:00:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 14.727272727272727) internal successors, (324), 18 states have internal predecessors, (324), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) Word has length 237 [2024-11-18 14:00:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:06,990 INFO L225 Difference]: With dead ends: 56596 [2024-11-18 14:00:06,990 INFO L226 Difference]: Without dead ends: 50485 [2024-11-18 14:00:07,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 483 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2634 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1060, Invalid=8060, Unknown=0, NotChecked=0, Total=9120 [2024-11-18 14:00:07,063 INFO L432 NwaCegarLoop]: 1855 mSDtfsCounter, 14777 mSDsluCounter, 17249 mSDsCounter, 0 mSdLazyCounter, 31847 mSolverCounterSat, 6074 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14777 SdHoareTripleChecker+Valid, 19104 SdHoareTripleChecker+Invalid, 37921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6074 IncrementalHoareTripleChecker+Valid, 31847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:07,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14777 Valid, 19104 Invalid, 37921 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6074 Valid, 31847 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-11-18 14:00:07,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50485 states. [2024-11-18 14:00:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50485 to 47423. [2024-11-18 14:00:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47423 states, 35868 states have (on average 1.5758893721422995) internal successors, (56524), 37176 states have internal predecessors, (56524), 8766 states have call successors, (8766), 1667 states have call predecessors, (8766), 2788 states have return successors, (13820), 9015 states have call predecessors, (13820), 8762 states have call successors, (13820) [2024-11-18 14:00:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47423 states to 47423 states and 79110 transitions. [2024-11-18 14:00:10,838 INFO L78 Accepts]: Start accepts. Automaton has 47423 states and 79110 transitions. Word has length 237 [2024-11-18 14:00:10,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:10,838 INFO L471 AbstractCegarLoop]: Abstraction has 47423 states and 79110 transitions. [2024-11-18 14:00:10,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.727272727272727) internal successors, (324), 18 states have internal predecessors, (324), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2024-11-18 14:00:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 47423 states and 79110 transitions. [2024-11-18 14:00:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-18 14:00:10,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:10,882 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:10,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:11,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-18 14:00:11,084 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:11,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:11,085 INFO L85 PathProgramCache]: Analyzing trace with hash 267710590, now seen corresponding path program 1 times [2024-11-18 14:00:11,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:11,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904488754] [2024-11-18 14:00:11,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:11,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-18 14:00:11,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:11,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904488754] [2024-11-18 14:00:11,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904488754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:11,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:00:11,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 14:00:11,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903149930] [2024-11-18 14:00:11,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:11,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 14:00:11,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:11,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 14:00:11,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 14:00:11,638 INFO L87 Difference]: Start difference. First operand 47423 states and 79110 transitions. Second operand has 8 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-18 14:00:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:14,620 INFO L93 Difference]: Finished difference Result 75879 states and 125993 transitions. [2024-11-18 14:00:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:00:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 240 [2024-11-18 14:00:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:14,850 INFO L225 Difference]: With dead ends: 75879 [2024-11-18 14:00:14,851 INFO L226 Difference]: Without dead ends: 28560 [2024-11-18 14:00:15,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:15,041 INFO L432 NwaCegarLoop]: 859 mSDtfsCounter, 41 mSDsluCounter, 5102 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5961 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:15,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5961 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:00:15,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28560 states. [2024-11-18 14:00:17,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28560 to 28560. [2024-11-18 14:00:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28560 states, 21742 states have (on average 1.5848587986385798) internal successors, (34458), 22574 states have internal predecessors, (34458), 5058 states have call successors, (5058), 1116 states have call predecessors, (5058), 1759 states have return successors, (7484), 5105 states have call predecessors, (7484), 5054 states have call successors, (7484) [2024-11-18 14:00:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28560 states to 28560 states and 47000 transitions. [2024-11-18 14:00:17,691 INFO L78 Accepts]: Start accepts. Automaton has 28560 states and 47000 transitions. Word has length 240 [2024-11-18 14:00:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:17,692 INFO L471 AbstractCegarLoop]: Abstraction has 28560 states and 47000 transitions. [2024-11-18 14:00:17,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2024-11-18 14:00:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 28560 states and 47000 transitions. [2024-11-18 14:00:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-18 14:00:17,734 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:17,735 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:17,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-18 14:00:17,735 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:17,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:17,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1270094312, now seen corresponding path program 1 times [2024-11-18 14:00:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:17,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467526364] [2024-11-18 14:00:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-18 14:00:18,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467526364] [2024-11-18 14:00:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467526364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366522528] [2024-11-18 14:00:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:18,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:18,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:18,177 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:18,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-18 14:00:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:18,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 2304 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 14:00:18,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-18 14:00:18,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:18,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366522528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:18,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:18,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2024-11-18 14:00:18,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179832980] [2024-11-18 14:00:18,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:18,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:18,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:18,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:18,579 INFO L87 Difference]: Start difference. First operand 28560 states and 47000 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 14:00:19,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:19,711 INFO L93 Difference]: Finished difference Result 34745 states and 57006 transitions. [2024-11-18 14:00:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 14:00:19,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 240 [2024-11-18 14:00:19,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:19,797 INFO L225 Difference]: With dead ends: 34745 [2024-11-18 14:00:19,797 INFO L226 Difference]: Without dead ends: 13824 [2024-11-18 14:00:19,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:00:19,978 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 1 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:19,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2553 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13824 states. [2024-11-18 14:00:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13824 to 13824. [2024-11-18 14:00:21,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13824 states, 10579 states have (on average 1.5850269401644768) internal successors, (16768), 10979 states have internal predecessors, (16768), 2399 states have call successors, (2399), 562 states have call predecessors, (2399), 845 states have return successors, (3327), 2390 states have call predecessors, (3327), 2395 states have call successors, (3327) [2024-11-18 14:00:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13824 states to 13824 states and 22494 transitions. [2024-11-18 14:00:21,149 INFO L78 Accepts]: Start accepts. Automaton has 13824 states and 22494 transitions. Word has length 240 [2024-11-18 14:00:21,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:21,150 INFO L471 AbstractCegarLoop]: Abstraction has 13824 states and 22494 transitions. [2024-11-18 14:00:21,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-18 14:00:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 13824 states and 22494 transitions. [2024-11-18 14:00:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-18 14:00:21,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:21,161 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:21,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:21,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:21,362 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:21,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:21,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1454397983, now seen corresponding path program 1 times [2024-11-18 14:00:21,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:21,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415541696] [2024-11-18 14:00:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:21,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-18 14:00:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:21,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415541696] [2024-11-18 14:00:21,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415541696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:21,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398271634] [2024-11-18 14:00:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:21,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:21,990 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:21,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-18 14:00:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:22,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 2321 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 14:00:22,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-18 14:00:22,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:22,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398271634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:22,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:22,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2024-11-18 14:00:22,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874628747] [2024-11-18 14:00:22,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:22,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 14:00:22,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:22,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 14:00:22,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:00:22,408 INFO L87 Difference]: Start difference. First operand 13824 states and 22494 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 14:00:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:23,261 INFO L93 Difference]: Finished difference Result 27596 states and 45108 transitions. [2024-11-18 14:00:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:00:23,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 244 [2024-11-18 14:00:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:23,345 INFO L225 Difference]: With dead ends: 27596 [2024-11-18 14:00:23,346 INFO L226 Difference]: Without dead ends: 13924 [2024-11-18 14:00:23,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:00:23,397 INFO L432 NwaCegarLoop]: 860 mSDtfsCounter, 0 mSDsluCounter, 3433 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4293 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:23,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4293 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:00:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13924 states. [2024-11-18 14:00:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13924 to 13924. [2024-11-18 14:00:24,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13924 states, 10659 states have (on average 1.5806360821840697) internal successors, (16848), 11059 states have internal predecessors, (16848), 2399 states have call successors, (2399), 562 states have call predecessors, (2399), 865 states have return successors, (3347), 2410 states have call predecessors, (3347), 2395 states have call successors, (3347) [2024-11-18 14:00:24,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13924 states to 13924 states and 22594 transitions. [2024-11-18 14:00:24,530 INFO L78 Accepts]: Start accepts. Automaton has 13924 states and 22594 transitions. Word has length 244 [2024-11-18 14:00:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:24,534 INFO L471 AbstractCegarLoop]: Abstraction has 13924 states and 22594 transitions. [2024-11-18 14:00:24,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-18 14:00:24,535 INFO L276 IsEmpty]: Start isEmpty. Operand 13924 states and 22594 transitions. [2024-11-18 14:00:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-18 14:00:24,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:24,557 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:24,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-18 14:00:24,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:24,758 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:00:24,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:00:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1595658536, now seen corresponding path program 1 times [2024-11-18 14:00:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:00:24,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850964251] [2024-11-18 14:00:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:24,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:00:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2024-11-18 14:00:25,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:00:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850964251] [2024-11-18 14:00:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850964251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:00:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454059646] [2024-11-18 14:00:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:00:25,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:00:25,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:00:25,487 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:00:25,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-18 14:00:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:00:26,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 14:00:26,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:00:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-18 14:00:26,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 14:00:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454059646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:00:26,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 14:00:26,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-18 14:00:26,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21192594] [2024-11-18 14:00:26,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:00:26,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 14:00:26,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:00:26,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 14:00:26,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:00:26,165 INFO L87 Difference]: Start difference. First operand 13924 states and 22594 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-18 14:00:27,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:00:27,311 INFO L93 Difference]: Finished difference Result 28244 states and 46492 transitions. [2024-11-18 14:00:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:00:27,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 347 [2024-11-18 14:00:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:00:27,399 INFO L225 Difference]: With dead ends: 28244 [2024-11-18 14:00:27,399 INFO L226 Difference]: Without dead ends: 14464 [2024-11-18 14:00:27,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:00:27,450 INFO L432 NwaCegarLoop]: 802 mSDtfsCounter, 144 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:00:27,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2383 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:00:27,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14464 states. [2024-11-18 14:00:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14464 to 14392. [2024-11-18 14:00:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14392 states, 11115 states have (on average 1.5946018893387315) internal successors, (17724), 11515 states have internal predecessors, (17724), 2399 states have call successors, (2399), 574 states have call predecessors, (2399), 877 states have return successors, (3347), 2410 states have call predecessors, (3347), 2395 states have call successors, (3347) [2024-11-18 14:00:28,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14392 states to 14392 states and 23470 transitions. [2024-11-18 14:00:28,626 INFO L78 Accepts]: Start accepts. Automaton has 14392 states and 23470 transitions. Word has length 347 [2024-11-18 14:00:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:00:28,628 INFO L471 AbstractCegarLoop]: Abstraction has 14392 states and 23470 transitions. [2024-11-18 14:00:28,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2024-11-18 14:00:28,628 INFO L276 IsEmpty]: Start isEmpty. Operand 14392 states and 23470 transitions. [2024-11-18 14:00:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-18 14:00:28,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:00:28,638 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:00:28,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0