./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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_spec3_product24.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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:36:43,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:36:43,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:36:43,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:36:43,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:36:43,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:36:43,223 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:36:43,223 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:36:43,223 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:36:43,223 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:36:43,224 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:36:43,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:36:43,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:36:43,224 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:36:43,225 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:43,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:36:43,225 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:36:43,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:36:43,226 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2025-03-16 18:36:43,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:36:43,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:36:43,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:36:43,456 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:36:43,457 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:36:43,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2025-03-16 18:36:44,641 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281aecd09/fca2b7fa19d64c29bf9e83335316b4a2/FLAGfb08daadd [2025-03-16 18:36:44,961 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:36:44,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2025-03-16 18:36:44,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281aecd09/fca2b7fa19d64c29bf9e83335316b4a2/FLAGfb08daadd [2025-03-16 18:36:45,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281aecd09/fca2b7fa19d64c29bf9e83335316b4a2 [2025-03-16 18:36:45,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:36:45,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:36:45,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:45,010 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:36:45,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:36:45,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2ddbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45, skipping insertion in model container [2025-03-16 18:36:45,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:36:45,451 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_spec3_product24.cil.c[75121,75134] [2025-03-16 18:36:45,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:45,467 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:36:45,473 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2025-03-16 18:36:45,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [67] [2025-03-16 18:36:45,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [425] [2025-03-16 18:36:45,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [545] [2025-03-16 18:36:45,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [641] [2025-03-16 18:36:45,475 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2290] [2025-03-16 18:36:45,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [2951] [2025-03-16 18:36:45,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3138] [2025-03-16 18:36:45,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3504] [2025-03-16 18:36:45,476 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3539] [2025-03-16 18:36:45,575 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_spec3_product24.cil.c[75121,75134] [2025-03-16 18:36:45,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:45,596 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:36:45,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45 WrapperNode [2025-03-16 18:36:45,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:45,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:45,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:36:45,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:36:45,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,653 INFO L138 Inliner]: procedures = 96, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 962 [2025-03-16 18:36:45,653 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:45,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:36:45,654 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:36:45,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:36:45,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,692 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]. [2025-03-16 18:36:45,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,718 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,730 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:36:45,740 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:36:45,741 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:36:45,741 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:36:45,742 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (1/1) ... [2025-03-16 18:36:45,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:45,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:45,771 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) [2025-03-16 18:36:45,775 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 [2025-03-16 18:36:45,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:36:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-16 18:36:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2025-03-16 18:36:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-16 18:36:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-16 18:36:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:36:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:36:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:36:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:36:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-16 18:36:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-16 18:36:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:36:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:36:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-16 18:36:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-16 18:36:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:36:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:36:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:36:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:36:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:36:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-16 18:36:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-16 18:36:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:36:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:36:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:36:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:36:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:36:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:36:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:36:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:36:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:36:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:36:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:36:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2025-03-16 18:36:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2025-03-16 18:36:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:36:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:36:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:36:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:36:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-16 18:36:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-16 18:36:45,963 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:36:45,966 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:36:46,048 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1600: #res#1 := ~retValue_acc~18#1; [2025-03-16 18:36:46,048 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1572-1: stopRequestedAtCurrentFloor__wrappee__weight_#res#1 := stopRequestedAtCurrentFloor__wrappee__weight_~retValue_acc~17#1; [2025-03-16 18:36:46,053 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L928: #res := ~retValue_acc~9; [2025-03-16 18:36:46,077 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L464: #res := ~retValue_acc~2; [2025-03-16 18:36:46,101 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2278: #res := ~retValue_acc~22; [2025-03-16 18:36:46,176 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1516-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~16#1; [2025-03-16 18:36:46,176 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1453-1: stopRequestedInDirection__wrappee__twothirdsfull_#res#1 := stopRequestedInDirection__wrappee__twothirdsfull_~retValue_acc~14#1; [2025-03-16 18:36:46,176 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1482: #res#1 := ~retValue_acc~15#1; [2025-03-16 18:36:46,191 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1645: #res := ~retValue_acc~20; [2025-03-16 18:36:46,298 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L885-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~7#1; [2025-03-16 18:36:46,369 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1048-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~11#1; [2025-03-16 18:36:46,370 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1061-1: isIdle_#res#1 := isIdle_~retValue_acc~12#1; [2025-03-16 18:36:46,376 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2948: #res := ~retValue_acc~26; [2025-03-16 18:36:46,391 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L542: #res := ~retValue_acc~4; [2025-03-16 18:36:46,394 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L723: #res := ~retValue_acc~5; [2025-03-16 18:36:46,398 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L876: #res := ~retValue_acc~6; [2025-03-16 18:36:46,575 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L503: #res := ~retValue_acc~3; [2025-03-16 18:36:46,603 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L919: #res := ~retValue_acc~8; [2025-03-16 18:36:46,680 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2637: #res := ~retValue_acc~25; [2025-03-16 18:36:46,795 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1413: #res := ~retValue_acc~13; [2025-03-16 18:36:46,861 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3536-1: valid_product_#res#1 := valid_product_~retValue_acc~31#1; [2025-03-16 18:36:46,862 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L422-1: main_#res#1 := main_~retValue_acc~1#1; [2025-03-16 18:36:46,873 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2401: #res := ~retValue_acc~24; [2025-03-16 18:36:46,942 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1631-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~19#1; [2025-03-16 18:36:47,094 INFO L? ?]: Removed 485 outVars from TransFormulas that were not future-live. [2025-03-16 18:36:47,094 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:36:47,119 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:36:47,119 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:36:47,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:47 BoogieIcfgContainer [2025-03-16 18:36:47,119 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:36:47,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:36:47,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:36:47,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:36:47,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:36:45" (1/3) ... [2025-03-16 18:36:47,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbfebb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:47, skipping insertion in model container [2025-03-16 18:36:47,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:45" (2/3) ... [2025-03-16 18:36:47,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbfebb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:47, skipping insertion in model container [2025-03-16 18:36:47,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:47" (3/3) ... [2025-03-16 18:36:47,129 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2025-03-16 18:36:47,140 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:36:47,142 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product24.cil.c that has 30 procedures, 613 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:36:47,194 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:36:47,203 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;@5b1609a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:36:47,205 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:36:47,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 613 states, 467 states have (on average 1.6659528907922911) internal successors, (778), 487 states have internal predecessors, (778), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2025-03-16 18:36:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:36:47,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:47,220 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:47,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:47,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -50734873, now seen corresponding path program 1 times [2025-03-16 18:36:47,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:47,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044866830] [2025-03-16 18:36:47,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:47,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:47,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:36:47,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:36:47,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:47,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:47,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:47,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044866830] [2025-03-16 18:36:47,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044866830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:47,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:47,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:47,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392973267] [2025-03-16 18:36:47,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:47,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:47,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:47,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:47,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:47,796 INFO L87 Difference]: Start difference. First operand has 613 states, 467 states have (on average 1.6659528907922911) internal successors, (778), 487 states have internal predecessors, (778), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:47,982 INFO L93 Difference]: Finished difference Result 1227 states and 2032 transitions. [2025-03-16 18:36:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:47,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2025-03-16 18:36:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:47,998 INFO L225 Difference]: With dead ends: 1227 [2025-03-16 18:36:47,998 INFO L226 Difference]: Without dead ends: 619 [2025-03-16 18:36:48,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:48,007 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 91 mSDsluCounter, 4884 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5878 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:48,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5878 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:36:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2025-03-16 18:36:48,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 617. [2025-03-16 18:36:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 471 states have (on average 1.6581740976645436) internal successors, (781), 491 states have internal predecessors, (781), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2025-03-16 18:36:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1012 transitions. [2025-03-16 18:36:48,088 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1012 transitions. Word has length 63 [2025-03-16 18:36:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:48,089 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 1012 transitions. [2025-03-16 18:36:48,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1012 transitions. [2025-03-16 18:36:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:36:48,097 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:48,097 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:48,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:36:48,097 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:48,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:48,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1817496800, now seen corresponding path program 1 times [2025-03-16 18:36:48,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:48,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511672097] [2025-03-16 18:36:48,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:48,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:48,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:36:48,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:36:48,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:48,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:48,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:48,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511672097] [2025-03-16 18:36:48,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511672097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:48,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:48,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:48,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985672798] [2025-03-16 18:36:48,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:48,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:48,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:48,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:48,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:48,266 INFO L87 Difference]: Start difference. First operand 617 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:48,339 INFO L93 Difference]: Finished difference Result 1220 states and 2009 transitions. [2025-03-16 18:36:48,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:48,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2025-03-16 18:36:48,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:48,346 INFO L225 Difference]: With dead ends: 1220 [2025-03-16 18:36:48,346 INFO L226 Difference]: Without dead ends: 593 [2025-03-16 18:36:48,350 INFO L434 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 [2025-03-16 18:36:48,350 INFO L435 NwaCegarLoop]: 982 mSDtfsCounter, 14 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2941 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:48,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2941 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2025-03-16 18:36:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2025-03-16 18:36:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 450 states have (on average 1.6488888888888888) internal successors, (742), 468 states have internal predecessors, (742), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 969 transitions. [2025-03-16 18:36:48,383 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 969 transitions. Word has length 64 [2025-03-16 18:36:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:48,384 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 969 transitions. [2025-03-16 18:36:48,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 969 transitions. [2025-03-16 18:36:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:36:48,385 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:48,386 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:48,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:36:48,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:48,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1573684421, now seen corresponding path program 1 times [2025-03-16 18:36:48,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:48,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748488885] [2025-03-16 18:36:48,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:48,405 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:36:48,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:36:48,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:48,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:48,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748488885] [2025-03-16 18:36:48,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748488885] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:48,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:48,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:48,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727194557] [2025-03-16 18:36:48,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:48,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:48,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:48,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:48,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:48,611 INFO L87 Difference]: Start difference. First operand 593 states and 969 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:48,692 INFO L93 Difference]: Finished difference Result 1183 states and 1941 transitions. [2025-03-16 18:36:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:48,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 64 [2025-03-16 18:36:48,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:48,697 INFO L225 Difference]: With dead ends: 1183 [2025-03-16 18:36:48,699 INFO L226 Difference]: Without dead ends: 587 [2025-03-16 18:36:48,702 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:48,702 INFO L435 NwaCegarLoop]: 958 mSDtfsCounter, 77 mSDsluCounter, 4720 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5678 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:48,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5678 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:48,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2025-03-16 18:36:48,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2025-03-16 18:36:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 444 states have (on average 1.6418918918918919) internal successors, (729), 462 states have internal predecessors, (729), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 956 transitions. [2025-03-16 18:36:48,726 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 956 transitions. Word has length 64 [2025-03-16 18:36:48,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:48,726 INFO L471 AbstractCegarLoop]: Abstraction has 587 states and 956 transitions. [2025-03-16 18:36:48,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 956 transitions. [2025-03-16 18:36:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 18:36:48,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:48,728 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:48,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:36:48,728 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:48,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1195929857, now seen corresponding path program 1 times [2025-03-16 18:36:48,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:48,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042764558] [2025-03-16 18:36:48,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:48,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:48,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 18:36:48,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 18:36:48,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:48,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042764558] [2025-03-16 18:36:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042764558] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968914784] [2025-03-16 18:36:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:48,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:48,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:48,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:48,940 INFO L87 Difference]: Start difference. First operand 587 states and 956 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:49,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:49,034 INFO L93 Difference]: Finished difference Result 1171 states and 1915 transitions. [2025-03-16 18:36:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:49,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 65 [2025-03-16 18:36:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:49,040 INFO L225 Difference]: With dead ends: 1171 [2025-03-16 18:36:49,041 INFO L226 Difference]: Without dead ends: 581 [2025-03-16 18:36:49,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:49,045 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 63 mSDsluCounter, 4672 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:49,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5618 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:49,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-03-16 18:36:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2025-03-16 18:36:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.634703196347032) internal successors, (716), 456 states have internal predecessors, (716), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 943 transitions. [2025-03-16 18:36:49,072 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 943 transitions. Word has length 65 [2025-03-16 18:36:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:49,072 INFO L471 AbstractCegarLoop]: Abstraction has 581 states and 943 transitions. [2025-03-16 18:36:49,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 943 transitions. [2025-03-16 18:36:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:36:49,074 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:49,074 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:49,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:36:49,074 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:49,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:49,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1119672161, now seen corresponding path program 1 times [2025-03-16 18:36:49,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:49,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929527802] [2025-03-16 18:36:49,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:49,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:49,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:36:49,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:36:49,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:49,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:49,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:49,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929527802] [2025-03-16 18:36:49,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929527802] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:49,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:49,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481433481] [2025-03-16 18:36:49,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:49,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:49,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:49,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:49,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:49,257 INFO L87 Difference]: Start difference. First operand 581 states and 943 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:49,317 INFO L93 Difference]: Finished difference Result 1159 states and 1889 transitions. [2025-03-16 18:36:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:49,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2025-03-16 18:36:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:49,321 INFO L225 Difference]: With dead ends: 1159 [2025-03-16 18:36:49,321 INFO L226 Difference]: Without dead ends: 575 [2025-03-16 18:36:49,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:49,324 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 49 mSDsluCounter, 4624 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5558 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:49,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5558 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-16 18:36:49,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-16 18:36:49,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 432 states have (on average 1.6273148148148149) internal successors, (703), 450 states have internal predecessors, (703), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 930 transitions. [2025-03-16 18:36:49,341 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 930 transitions. Word has length 66 [2025-03-16 18:36:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:49,342 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 930 transitions. [2025-03-16 18:36:49,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 930 transitions. [2025-03-16 18:36:49,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:36:49,343 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:49,343 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:49,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:36:49,343 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:49,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:49,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2142465833, now seen corresponding path program 1 times [2025-03-16 18:36:49,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:49,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603281369] [2025-03-16 18:36:49,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:49,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:49,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:36:49,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:36:49,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:49,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:49,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603281369] [2025-03-16 18:36:49,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603281369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:49,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:49,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:49,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565248580] [2025-03-16 18:36:49,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:49,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:49,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:49,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:49,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:49,463 INFO L87 Difference]: Start difference. First operand 575 states and 930 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:49,520 INFO L93 Difference]: Finished difference Result 1147 states and 1863 transitions. [2025-03-16 18:36:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 66 [2025-03-16 18:36:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:49,525 INFO L225 Difference]: With dead ends: 1147 [2025-03-16 18:36:49,526 INFO L226 Difference]: Without dead ends: 575 [2025-03-16 18:36:49,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:49,529 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 24 mSDsluCounter, 4588 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5510 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:49,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5510 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-16 18:36:49,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-16 18:36:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 432 states have (on average 1.625) internal successors, (702), 450 states have internal predecessors, (702), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 929 transitions. [2025-03-16 18:36:49,549 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 929 transitions. Word has length 66 [2025-03-16 18:36:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:49,549 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 929 transitions. [2025-03-16 18:36:49,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 929 transitions. [2025-03-16 18:36:49,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:36:49,550 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:49,550 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:49,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:36:49,551 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:49,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash 915964187, now seen corresponding path program 1 times [2025-03-16 18:36:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102792679] [2025-03-16 18:36:49,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:49,564 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:36:49,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:36:49,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:49,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:49,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102792679] [2025-03-16 18:36:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102792679] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:49,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:49,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952403518] [2025-03-16 18:36:49,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:49,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:49,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:49,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:49,638 INFO L87 Difference]: Start difference. First operand 575 states and 929 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:49,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:49,681 INFO L93 Difference]: Finished difference Result 1138 states and 1848 transitions. [2025-03-16 18:36:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:49,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2025-03-16 18:36:49,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:49,686 INFO L225 Difference]: With dead ends: 1138 [2025-03-16 18:36:49,686 INFO L226 Difference]: Without dead ends: 575 [2025-03-16 18:36:49,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:49,689 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 15 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:49,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2727 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-16 18:36:49,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-16 18:36:49,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 432 states have (on average 1.6226851851851851) internal successors, (701), 450 states have internal predecessors, (701), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:49,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 928 transitions. [2025-03-16 18:36:49,708 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 928 transitions. Word has length 67 [2025-03-16 18:36:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:49,708 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 928 transitions. [2025-03-16 18:36:49,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 928 transitions. [2025-03-16 18:36:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 18:36:49,709 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:49,709 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:49,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:36:49,709 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:49,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -664102489, now seen corresponding path program 1 times [2025-03-16 18:36:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:49,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759979564] [2025-03-16 18:36:49,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:49,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:36:49,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:36:49,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:49,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:49,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:49,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759979564] [2025-03-16 18:36:49,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759979564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:49,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:49,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:49,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026874749] [2025-03-16 18:36:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:49,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:49,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:49,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:49,827 INFO L87 Difference]: Start difference. First operand 575 states and 928 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:49,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:49,868 INFO L93 Difference]: Finished difference Result 1138 states and 1846 transitions. [2025-03-16 18:36:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:49,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-03-16 18:36:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:49,872 INFO L225 Difference]: With dead ends: 1138 [2025-03-16 18:36:49,873 INFO L226 Difference]: Without dead ends: 575 [2025-03-16 18:36:49,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:49,875 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 14 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:49,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2729 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:49,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-16 18:36:49,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-16 18:36:49,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 432 states have (on average 1.6203703703703705) internal successors, (700), 450 states have internal predecessors, (700), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 927 transitions. [2025-03-16 18:36:49,891 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 927 transitions. Word has length 68 [2025-03-16 18:36:49,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:49,892 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 927 transitions. [2025-03-16 18:36:49,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:49,892 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 927 transitions. [2025-03-16 18:36:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-16 18:36:49,892 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:49,893 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:49,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:36:49,893 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:49,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1952405474, now seen corresponding path program 1 times [2025-03-16 18:36:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:49,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896587239] [2025-03-16 18:36:49,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:49,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:49,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-16 18:36:49,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-16 18:36:49,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:49,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:49,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896587239] [2025-03-16 18:36:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896587239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:49,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:49,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697450185] [2025-03-16 18:36:49,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:49,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:49,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:49,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:49,974 INFO L87 Difference]: Start difference. First operand 575 states and 927 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:50,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:50,007 INFO L93 Difference]: Finished difference Result 1138 states and 1844 transitions. [2025-03-16 18:36:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 69 [2025-03-16 18:36:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:50,012 INFO L225 Difference]: With dead ends: 1138 [2025-03-16 18:36:50,012 INFO L226 Difference]: Without dead ends: 575 [2025-03-16 18:36:50,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:50,015 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 13 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:50,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2731 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-16 18:36:50,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-16 18:36:50,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 432 states have (on average 1.6180555555555556) internal successors, (699), 450 states have internal predecessors, (699), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 926 transitions. [2025-03-16 18:36:50,033 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 926 transitions. Word has length 69 [2025-03-16 18:36:50,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:50,033 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 926 transitions. [2025-03-16 18:36:50,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 926 transitions. [2025-03-16 18:36:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-16 18:36:50,034 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:50,034 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:50,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:36:50,034 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:50,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1508998666, now seen corresponding path program 1 times [2025-03-16 18:36:50,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:50,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091698641] [2025-03-16 18:36:50,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:50,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:50,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-16 18:36:50,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 18:36:50,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:50,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:50,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:50,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091698641] [2025-03-16 18:36:50,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091698641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:50,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:50,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:50,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702699023] [2025-03-16 18:36:50,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:50,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:50,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:50,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:50,113 INFO L87 Difference]: Start difference. First operand 575 states and 926 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:50,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:50,146 INFO L93 Difference]: Finished difference Result 1138 states and 1842 transitions. [2025-03-16 18:36:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:50,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2025-03-16 18:36:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:50,150 INFO L225 Difference]: With dead ends: 1138 [2025-03-16 18:36:50,150 INFO L226 Difference]: Without dead ends: 575 [2025-03-16 18:36:50,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:50,153 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 12 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2733 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:50,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2733 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-16 18:36:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-16 18:36:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 432 states have (on average 1.6157407407407407) internal successors, (698), 450 states have internal predecessors, (698), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2025-03-16 18:36:50,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 925 transitions. [2025-03-16 18:36:50,169 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 925 transitions. Word has length 70 [2025-03-16 18:36:50,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:50,170 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 925 transitions. [2025-03-16 18:36:50,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 925 transitions. [2025-03-16 18:36:50,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 18:36:50,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:50,170 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:50,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:36:50,171 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:50,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1887468321, now seen corresponding path program 1 times [2025-03-16 18:36:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024389029] [2025-03-16 18:36:50,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:50,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:36:50,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:36:50,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:50,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024389029] [2025-03-16 18:36:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024389029] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338304722] [2025-03-16 18:36:50,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:50,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:50,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:50,310 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) [2025-03-16 18:36:50,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:36:50,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:36:50,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:36:50,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:50,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:50,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:50,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:50,649 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:50,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338304722] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:50,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:50,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 18:36:50,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360401392] [2025-03-16 18:36:50,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:50,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:50,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:50,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:50,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:50,651 INFO L87 Difference]: Start difference. First operand 575 states and 925 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:50,707 INFO L93 Difference]: Finished difference Result 1644 states and 2671 transitions. [2025-03-16 18:36:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2025-03-16 18:36:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:50,715 INFO L225 Difference]: With dead ends: 1644 [2025-03-16 18:36:50,716 INFO L226 Difference]: Without dead ends: 1083 [2025-03-16 18:36:50,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:50,719 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 886 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:50,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 2398 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2025-03-16 18:36:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1068. [2025-03-16 18:36:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 810 states have (on average 1.6246913580246913) internal successors, (1316), 845 states have internal predecessors, (1316), 205 states have call successors, (205), 53 states have call predecessors, (205), 52 states have return successors, (207), 197 states have call predecessors, (207), 202 states have call successors, (207) [2025-03-16 18:36:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1728 transitions. [2025-03-16 18:36:50,763 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1728 transitions. Word has length 71 [2025-03-16 18:36:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:50,764 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1728 transitions. [2025-03-16 18:36:50,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1728 transitions. [2025-03-16 18:36:50,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-16 18:36:50,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:50,765 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:50,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 18:36:50,967 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,SelfDestructingSolverStorable10 [2025-03-16 18:36:50,967 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:50,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1681840695, now seen corresponding path program 1 times [2025-03-16 18:36:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893735921] [2025-03-16 18:36:50,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:50,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:50,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 18:36:50,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 18:36:50,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:50,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:51,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893735921] [2025-03-16 18:36:51,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893735921] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726527963] [2025-03-16 18:36:51,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:51,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:51,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:51,099 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) [2025-03-16 18:36:51,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:36:51,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-16 18:36:51,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-16 18:36:51,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:51,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:51,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:51,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:51,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:51,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726527963] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:51,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:51,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 18:36:51,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980018081] [2025-03-16 18:36:51,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:51,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:51,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:51,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:51,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:51,397 INFO L87 Difference]: Start difference. First operand 1068 states and 1728 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:51,472 INFO L93 Difference]: Finished difference Result 2630 states and 4279 transitions. [2025-03-16 18:36:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:51,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2025-03-16 18:36:51,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:51,485 INFO L225 Difference]: With dead ends: 2630 [2025-03-16 18:36:51,485 INFO L226 Difference]: Without dead ends: 1576 [2025-03-16 18:36:51,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:51,492 INFO L435 NwaCegarLoop]: 1634 mSDtfsCounter, 884 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:51,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2459 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2025-03-16 18:36:51,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1528. [2025-03-16 18:36:51,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1161 states have (on average 1.6347975882859604) internal successors, (1898), 1213 states have internal predecessors, (1898), 292 states have call successors, (292), 74 states have call predecessors, (292), 74 states have return successors, (299), 282 states have call predecessors, (299), 289 states have call successors, (299) [2025-03-16 18:36:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2489 transitions. [2025-03-16 18:36:51,555 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2489 transitions. Word has length 72 [2025-03-16 18:36:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:51,556 INFO L471 AbstractCegarLoop]: Abstraction has 1528 states and 2489 transitions. [2025-03-16 18:36:51,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:51,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2489 transitions. [2025-03-16 18:36:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-16 18:36:51,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:51,558 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:51,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:51,758 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,SelfDestructingSolverStorable11 [2025-03-16 18:36:51,758 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:51,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1624538774, now seen corresponding path program 1 times [2025-03-16 18:36:51,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298929012] [2025-03-16 18:36:51,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:51,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:51,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-16 18:36:51,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-16 18:36:51,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:51,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:51,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:51,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298929012] [2025-03-16 18:36:51,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298929012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:51,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:51,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268024460] [2025-03-16 18:36:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:51,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:51,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:51,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:51,922 INFO L87 Difference]: Start difference. First operand 1528 states and 2489 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:36:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:52,506 INFO L93 Difference]: Finished difference Result 4516 states and 7506 transitions. [2025-03-16 18:36:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2025-03-16 18:36:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:52,529 INFO L225 Difference]: With dead ends: 4516 [2025-03-16 18:36:52,529 INFO L226 Difference]: Without dead ends: 3002 [2025-03-16 18:36:52,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:52,540 INFO L435 NwaCegarLoop]: 1058 mSDtfsCounter, 915 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 4843 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:52,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 4843 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2025-03-16 18:36:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2955. [2025-03-16 18:36:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2247 states have (on average 1.6332888295505117) internal successors, (3670), 2347 states have internal predecessors, (3670), 563 states have call successors, (563), 142 states have call predecessors, (563), 144 states have return successors, (661), 549 states have call predecessors, (661), 559 states have call successors, (661) [2025-03-16 18:36:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4894 transitions. [2025-03-16 18:36:52,703 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4894 transitions. Word has length 74 [2025-03-16 18:36:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:52,703 INFO L471 AbstractCegarLoop]: Abstraction has 2955 states and 4894 transitions. [2025-03-16 18:36:52,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:36:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4894 transitions. [2025-03-16 18:36:52,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 18:36:52,705 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:52,705 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:52,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:36:52,705 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:52,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:52,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1148884039, now seen corresponding path program 1 times [2025-03-16 18:36:52,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:52,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990562432] [2025-03-16 18:36:52,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:52,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 18:36:52,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 18:36:52,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:52,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:52,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990562432] [2025-03-16 18:36:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990562432] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128804366] [2025-03-16 18:36:52,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:52,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:52,852 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) [2025-03-16 18:36:52,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:36:52,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 18:36:53,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 18:36:53,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:53,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:53,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:36:53,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:53,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128804366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:53,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:53,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-16 18:36:53,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186634499] [2025-03-16 18:36:53,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:53,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:53,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:53,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:53,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:53,215 INFO L87 Difference]: Start difference. First operand 2955 states and 4894 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-16 18:36:53,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:53,974 INFO L93 Difference]: Finished difference Result 8026 states and 13556 transitions. [2025-03-16 18:36:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:53,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 75 [2025-03-16 18:36:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:54,019 INFO L225 Difference]: With dead ends: 8026 [2025-03-16 18:36:54,020 INFO L226 Difference]: Without dead ends: 5085 [2025-03-16 18:36:54,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:36:54,042 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 788 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:54,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 4175 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 18:36:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5085 states. [2025-03-16 18:36:54,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5085 to 5042. [2025-03-16 18:36:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 3828 states have (on average 1.5862068965517242) internal successors, (6072), 3994 states have internal predecessors, (6072), 950 states have call successors, (950), 256 states have call predecessors, (950), 263 states have return successors, (1253), 931 states have call predecessors, (1253), 944 states have call successors, (1253) [2025-03-16 18:36:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 8275 transitions. [2025-03-16 18:36:54,300 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 8275 transitions. Word has length 75 [2025-03-16 18:36:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:54,300 INFO L471 AbstractCegarLoop]: Abstraction has 5042 states and 8275 transitions. [2025-03-16 18:36:54,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-16 18:36:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 8275 transitions. [2025-03-16 18:36:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-16 18:36:54,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:54,301 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:54,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 18:36:54,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:54,502 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:54,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash -888629766, now seen corresponding path program 1 times [2025-03-16 18:36:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:54,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344701454] [2025-03-16 18:36:54,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:54,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-16 18:36:54,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-16 18:36:54,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:54,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:54,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344701454] [2025-03-16 18:36:54,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344701454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:54,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:54,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410323532] [2025-03-16 18:36:54,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:54,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:54,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:54,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:54,585 INFO L87 Difference]: Start difference. First operand 5042 states and 8275 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:36:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:54,808 INFO L93 Difference]: Finished difference Result 10094 states and 16729 transitions. [2025-03-16 18:36:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 75 [2025-03-16 18:36:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:54,847 INFO L225 Difference]: With dead ends: 10094 [2025-03-16 18:36:54,848 INFO L226 Difference]: Without dead ends: 5066 [2025-03-16 18:36:54,875 INFO L434 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 [2025-03-16 18:36:54,876 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 12 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:54,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2697 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:54,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2025-03-16 18:36:55,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 5050. [2025-03-16 18:36:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5050 states, 3834 states have (on average 1.5847678664580074) internal successors, (6076), 4000 states have internal predecessors, (6076), 950 states have call successors, (950), 260 states have call predecessors, (950), 265 states have return successors, (1242), 929 states have call predecessors, (1242), 944 states have call successors, (1242) [2025-03-16 18:36:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5050 states to 5050 states and 8268 transitions. [2025-03-16 18:36:55,104 INFO L78 Accepts]: Start accepts. Automaton has 5050 states and 8268 transitions. Word has length 75 [2025-03-16 18:36:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:55,105 INFO L471 AbstractCegarLoop]: Abstraction has 5050 states and 8268 transitions. [2025-03-16 18:36:55,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:36:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 5050 states and 8268 transitions. [2025-03-16 18:36:55,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-16 18:36:55,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:55,106 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:55,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:36:55,106 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:55,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:55,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1343649094, now seen corresponding path program 1 times [2025-03-16 18:36:55,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:55,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828169720] [2025-03-16 18:36:55,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:55,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:55,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-16 18:36:55,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-16 18:36:55,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:55,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:36:55,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:55,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828169720] [2025-03-16 18:36:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828169720] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:55,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:55,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147242706] [2025-03-16 18:36:55,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:55,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:55,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:55,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:55,218 INFO L87 Difference]: Start difference. First operand 5050 states and 8268 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:55,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:55,998 INFO L93 Difference]: Finished difference Result 15091 states and 25693 transitions. [2025-03-16 18:36:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:56,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 83 [2025-03-16 18:36:56,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:56,093 INFO L225 Difference]: With dead ends: 15091 [2025-03-16 18:36:56,094 INFO L226 Difference]: Without dead ends: 10055 [2025-03-16 18:36:56,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:56,123 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 912 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:56,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 4599 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10055 states. [2025-03-16 18:36:56,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10055 to 9986. [2025-03-16 18:36:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 7584 states have (on average 1.5803006329113924) internal successors, (11985), 7910 states have internal predecessors, (11985), 1872 states have call successors, (1872), 514 states have call predecessors, (1872), 529 states have return successors, (2976), 1841 states have call predecessors, (2976), 1862 states have call successors, (2976) [2025-03-16 18:36:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 16833 transitions. [2025-03-16 18:36:56,561 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 16833 transitions. Word has length 83 [2025-03-16 18:36:56,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:56,562 INFO L471 AbstractCegarLoop]: Abstraction has 9986 states and 16833 transitions. [2025-03-16 18:36:56,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:56,563 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 16833 transitions. [2025-03-16 18:36:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-16 18:36:56,564 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:56,564 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-16 18:36:56,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 18:36:56,564 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:56,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash 143908689, now seen corresponding path program 1 times [2025-03-16 18:36:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675299602] [2025-03-16 18:36:56,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:56,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-16 18:36:56,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-16 18:36:56,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:56,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:36:56,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:56,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675299602] [2025-03-16 18:36:56,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675299602] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:56,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:56,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:56,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169140855] [2025-03-16 18:36:56,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:56,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:56,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:56,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:56,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:56,644 INFO L87 Difference]: Start difference. First operand 9986 states and 16833 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:57,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:57,080 INFO L93 Difference]: Finished difference Result 20030 states and 34243 transitions. [2025-03-16 18:36:57,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:57,081 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2025-03-16 18:36:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:57,161 INFO L225 Difference]: With dead ends: 20030 [2025-03-16 18:36:57,162 INFO L226 Difference]: Without dead ends: 10058 [2025-03-16 18:36:57,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:57,213 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 12 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:57,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2688 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:36:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10058 states. [2025-03-16 18:36:57,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10058 to 10026. [2025-03-16 18:36:57,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10026 states, 7620 states have (on average 1.5780839895013123) internal successors, (12025), 7938 states have internal predecessors, (12025), 1872 states have call successors, (1872), 530 states have call predecessors, (1872), 533 states have return successors, (2960), 1837 states have call predecessors, (2960), 1862 states have call successors, (2960) [2025-03-16 18:36:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10026 states to 10026 states and 16857 transitions. [2025-03-16 18:36:57,655 INFO L78 Accepts]: Start accepts. Automaton has 10026 states and 16857 transitions. Word has length 84 [2025-03-16 18:36:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:57,655 INFO L471 AbstractCegarLoop]: Abstraction has 10026 states and 16857 transitions. [2025-03-16 18:36:57,655 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, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10026 states and 16857 transitions. [2025-03-16 18:36:57,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-16 18:36:57,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:57,657 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-16 18:36:57,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 18:36:57,657 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash 577467239, now seen corresponding path program 1 times [2025-03-16 18:36:57,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328743017] [2025-03-16 18:36:57,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:36:57,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:36:57,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:57,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328743017] [2025-03-16 18:36:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328743017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:57,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484655892] [2025-03-16 18:36:57,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:57,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:57,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:57,789 INFO L87 Difference]: Start difference. First operand 10026 states and 16857 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:36:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:58,799 INFO L93 Difference]: Finished difference Result 30097 states and 53561 transitions. [2025-03-16 18:36:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:58,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2025-03-16 18:36:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:58,965 INFO L225 Difference]: With dead ends: 30097 [2025-03-16 18:36:58,965 INFO L226 Difference]: Without dead ends: 20085 [2025-03-16 18:36:59,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:59,026 INFO L435 NwaCegarLoop]: 994 mSDtfsCounter, 908 mSDsluCounter, 3614 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:59,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 4608 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20085 states. [2025-03-16 18:36:59,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20085 to 19984. [2025-03-16 18:36:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19984 states, 15192 states have (on average 1.5744470774091628) internal successors, (23919), 15822 states have internal predecessors, (23919), 3722 states have call successors, (3722), 1054 states have call predecessors, (3722), 1069 states have return successors, (7491), 3667 states have call predecessors, (7491), 3704 states have call successors, (7491) [2025-03-16 18:37:00,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19984 states to 19984 states and 35132 transitions. [2025-03-16 18:37:00,166 INFO L78 Accepts]: Start accepts. Automaton has 19984 states and 35132 transitions. Word has length 93 [2025-03-16 18:37:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:00,167 INFO L471 AbstractCegarLoop]: Abstraction has 19984 states and 35132 transitions. [2025-03-16 18:37:00,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:37:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 19984 states and 35132 transitions. [2025-03-16 18:37:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-16 18:37:00,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:00,169 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2025-03-16 18:37:00,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 18:37:00,169 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:00,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash -982708393, now seen corresponding path program 1 times [2025-03-16 18:37:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387213608] [2025-03-16 18:37:00,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:00,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-16 18:37:00,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-16 18:37:00,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:00,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:37:00,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:00,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387213608] [2025-03-16 18:37:00,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387213608] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:00,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:00,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:00,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911559244] [2025-03-16 18:37:00,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:00,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:00,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:00,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:00,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:00,248 INFO L87 Difference]: Start difference. First operand 19984 states and 35132 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:37:01,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:01,071 INFO L93 Difference]: Finished difference Result 40098 states and 72052 transitions. [2025-03-16 18:37:01,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:37:01,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2025-03-16 18:37:01,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:01,261 INFO L225 Difference]: With dead ends: 40098 [2025-03-16 18:37:01,261 INFO L226 Difference]: Without dead ends: 20128 [2025-03-16 18:37:01,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:37:01,382 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 11 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:01,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2688 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20128 states. [2025-03-16 18:37:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20128 to 20064. [2025-03-16 18:37:02,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20064 states, 15264 states have (on average 1.572261530398323) internal successors, (23999), 15894 states have internal predecessors, (23999), 3722 states have call successors, (3722), 1070 states have call predecessors, (3722), 1077 states have return successors, (7471), 3659 states have call predecessors, (7471), 3704 states have call successors, (7471) [2025-03-16 18:37:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20064 states to 20064 states and 35192 transitions. [2025-03-16 18:37:02,224 INFO L78 Accepts]: Start accepts. Automaton has 20064 states and 35192 transitions. Word has length 94 [2025-03-16 18:37:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:02,224 INFO L471 AbstractCegarLoop]: Abstraction has 20064 states and 35192 transitions. [2025-03-16 18:37:02,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:37:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 20064 states and 35192 transitions. [2025-03-16 18:37:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 18:37:02,226 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:02,227 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:02,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 18:37:02,227 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:02,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1136850450, now seen corresponding path program 1 times [2025-03-16 18:37:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:02,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030388837] [2025-03-16 18:37:02,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:02,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:02,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:37:02,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:37:02,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:02,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-16 18:37:02,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:02,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030388837] [2025-03-16 18:37:02,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030388837] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:37:02,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571277741] [2025-03-16 18:37:02,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:02,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:02,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:37:02,387 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) [2025-03-16 18:37:02,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:37:02,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:37:02,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:37:02,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:02,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:02,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:37:02,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:37:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 18:37:02,823 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:37:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571277741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:37:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2025-03-16 18:37:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47379867] [2025-03-16 18:37:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:02,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:37:02,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:02,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:37:02,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:37:02,826 INFO L87 Difference]: Start difference. First operand 20064 states and 35192 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:37:08,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:08,256 INFO L93 Difference]: Finished difference Result 71385 states and 132555 transitions. [2025-03-16 18:37:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 18:37:08,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 132 [2025-03-16 18:37:08,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:08,859 INFO L225 Difference]: With dead ends: 71385 [2025-03-16 18:37:08,859 INFO L226 Difference]: Without dead ends: 51335 [2025-03-16 18:37:09,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2025-03-16 18:37:09,077 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 3227 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 6841 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3419 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 7576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 6841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:09,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3419 Valid, 2389 Invalid, 7576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 6841 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-16 18:37:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51335 states. [2025-03-16 18:37:10,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51335 to 50698. [2025-03-16 18:37:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50698 states, 38608 states have (on average 1.5676802735184419) internal successors, (60525), 40134 states have internal predecessors, (60525), 9300 states have call successors, (9300), 2646 states have call predecessors, (9300), 2789 states have return successors, (22298), 9285 states have call predecessors, (22298), 9266 states have call successors, (22298) [2025-03-16 18:37:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50698 states to 50698 states and 92123 transitions. [2025-03-16 18:37:11,460 INFO L78 Accepts]: Start accepts. Automaton has 50698 states and 92123 transitions. Word has length 132 [2025-03-16 18:37:11,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:11,460 INFO L471 AbstractCegarLoop]: Abstraction has 50698 states and 92123 transitions. [2025-03-16 18:37:11,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-16 18:37:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 50698 states and 92123 transitions. [2025-03-16 18:37:11,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-03-16 18:37:11,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:11,462 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2025-03-16 18:37:11,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 18:37:11,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:11,667 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:11,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:11,667 INFO L85 PathProgramCache]: Analyzing trace with hash -257144076, now seen corresponding path program 1 times [2025-03-16 18:37:11,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:11,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494568349] [2025-03-16 18:37:11,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:11,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-16 18:37:11,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-16 18:37:11,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:11,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:37:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494568349] [2025-03-16 18:37:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494568349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:11,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:11,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859070333] [2025-03-16 18:37:11,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:11,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:11,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:11,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:11,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:11,786 INFO L87 Difference]: Start difference. First operand 50698 states and 92123 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-16 18:37:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:17,185 INFO L93 Difference]: Finished difference Result 152517 states and 307072 transitions. [2025-03-16 18:37:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:17,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2025-03-16 18:37:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:18,297 INFO L225 Difference]: With dead ends: 152517 [2025-03-16 18:37:18,297 INFO L226 Difference]: Without dead ends: 101833 [2025-03-16 18:37:18,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:18,777 INFO L435 NwaCegarLoop]: 1015 mSDtfsCounter, 905 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:18,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 4707 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:37:18,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101833 states. [2025-03-16 18:37:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101833 to 101476. [2025-03-16 18:37:22,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101476 states, 77286 states have (on average 1.5647982817069068) internal successors, (120937), 80324 states have internal predecessors, (120937), 18568 states have call successors, (18568), 5286 states have call predecessors, (18568), 5621 states have return successors, (59575), 18601 states have call predecessors, (59575), 18502 states have call successors, (59575) [2025-03-16 18:37:23,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101476 states to 101476 states and 199080 transitions. [2025-03-16 18:37:24,069 INFO L78 Accepts]: Start accepts. Automaton has 101476 states and 199080 transitions. Word has length 104 [2025-03-16 18:37:24,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:24,070 INFO L471 AbstractCegarLoop]: Abstraction has 101476 states and 199080 transitions. [2025-03-16 18:37:24,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-16 18:37:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 101476 states and 199080 transitions. [2025-03-16 18:37:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-16 18:37:24,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:24,072 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 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] [2025-03-16 18:37:24,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:37:24,072 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:24,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash 64328561, now seen corresponding path program 1 times [2025-03-16 18:37:24,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:24,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182628427] [2025-03-16 18:37:24,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:24,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:24,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-16 18:37:24,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-16 18:37:24,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:24,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:37:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:24,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182628427] [2025-03-16 18:37:24,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182628427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:24,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:24,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:24,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707402433] [2025-03-16 18:37:24,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:24,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:24,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:24,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:24,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:24,162 INFO L87 Difference]: Start difference. First operand 101476 states and 199080 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)