./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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_product30.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:18:18,343 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:18:18,388 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:18:18,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:18:18,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:18:18,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:18:18,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:18:18,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:18:18,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:18:18,417 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:18:18,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:18:18,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:18:18,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:18:18,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:18:18,418 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:18:18,419 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:18:18,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:18:18,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:18:18,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:18:18,420 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 -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2025-03-03 14:18:18,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:18:18,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:18:18,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:18:18,673 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:18:18,673 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:18:18,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2025-03-03 14:18:19,839 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5861547a3/4231ee28059b4419b0655787d07b90dd/FLAGddb00f2cb [2025-03-03 14:18:20,117 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:18:20,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2025-03-03 14:18:20,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5861547a3/4231ee28059b4419b0655787d07b90dd/FLAGddb00f2cb [2025-03-03 14:18:20,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5861547a3/4231ee28059b4419b0655787d07b90dd [2025-03-03 14:18:20,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:18:20,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:18:20,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:18:20,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:18:20,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:18:20,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a80055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20, skipping insertion in model container [2025-03-03 14:18:20,165 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,205 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:18:20,409 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_product30.cil.c[14523,14536] [2025-03-03 14:18:20,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:18:20,578 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:18:20,585 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2025-03-03 14:18:20,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [169] [2025-03-03 14:18:20,586 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [528] [2025-03-03 14:18:20,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [623] [2025-03-03 14:18:20,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [813] [2025-03-03 14:18:20,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [828] [2025-03-03 14:18:20,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [837] [2025-03-03 14:18:20,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2419] [2025-03-03 14:18:20,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2785] [2025-03-03 14:18:20,587 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2820] [2025-03-03 14:18:20,625 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_product30.cil.c[14523,14536] [2025-03-03 14:18:20,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:18:20,715 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:18:20,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20 WrapperNode [2025-03-03 14:18:20,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:18:20,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:18:20,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:18:20,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:18:20,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,743 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,775 INFO L138 Inliner]: procedures = 93, calls = 353, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 945 [2025-03-03 14:18:20,776 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:18:20,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:18:20,777 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:18:20,777 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:18:20,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,822 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]. [2025-03-03 14:18:20,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,847 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,862 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:18:20,872 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:18:20,873 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:18:20,873 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:18:20,874 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (1/1) ... [2025-03-03 14:18:20,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:18:20,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:20,901 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) [2025-03-03 14:18:20,904 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 [2025-03-03 14:18:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:18:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-03 14:18:20,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-03 14:18:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:18:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:18:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:18:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:18:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:18:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:18:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-03 14:18:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-03 14:18:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:18:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:18:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-03 14:18:20,927 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-03 14:18:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:18:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-03 14:18:20,928 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:18:20,929 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:18:20,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:18:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2025-03-03 14:18:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2025-03-03 14:18:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:18:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:18:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:18:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:18:21,068 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:18:21,071 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:18:21,100 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1140: #res := ~retValue_acc~9; [2025-03-03 14:18:21,130 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L88: #res := ~retValue_acc~0; [2025-03-03 14:18:21,197 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664: #res#1 := ~retValue_acc~14#1; [2025-03-03 14:18:21,197 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1698-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~15#1; [2025-03-03 14:18:21,218 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1796: #res := ~retValue_acc~18; [2025-03-03 14:18:21,408 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1625: #res := ~retValue_acc~13; [2025-03-03 14:18:21,491 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1260-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~11#1; [2025-03-03 14:18:21,491 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1273-1: isIdle_#res#1 := isIdle_~retValue_acc~12#1; [2025-03-03 14:18:21,576 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1097-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~7#1; [2025-03-03 14:18:21,580 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3478: #res := ~retValue_acc~27; [2025-03-03 14:18:21,590 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~2; [2025-03-03 14:18:21,593 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L915: #res := ~retValue_acc~5; [2025-03-03 14:18:21,595 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1088: #res := ~retValue_acc~6; [2025-03-03 14:18:21,757 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L127: #res := ~retValue_acc~1; [2025-03-03 14:18:21,775 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1131: #res := ~retValue_acc~8; [2025-03-03 14:18:21,821 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1180-1: isEmpty_#res#1 := isEmpty_~retValue_acc~10#1; [2025-03-03 14:18:21,879 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3167: #res := ~retValue_acc~26; [2025-03-03 14:18:21,970 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1754-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~16#1; [2025-03-03 14:18:21,970 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1782-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~17#1; [2025-03-03 14:18:22,047 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L525-1: main_#res#1 := main_~retValue_acc~4#1; [2025-03-03 14:18:22,048 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2817-1: valid_product_#res#1 := valid_product_~retValue_acc~24#1; [2025-03-03 14:18:22,058 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2931: #res := ~retValue_acc~25; [2025-03-03 14:18:22,178 INFO L? ?]: Removed 474 outVars from TransFormulas that were not future-live. [2025-03-03 14:18:22,178 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:18:22,201 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:18:22,202 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:18:22,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:18:22 BoogieIcfgContainer [2025-03-03 14:18:22,202 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:18:22,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:18:22,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:18:22,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:18:22,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:18:20" (1/3) ... [2025-03-03 14:18:22,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da7c6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:18:22, skipping insertion in model container [2025-03-03 14:18:22,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:18:20" (2/3) ... [2025-03-03 14:18:22,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da7c6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:18:22, skipping insertion in model container [2025-03-03 14:18:22,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:18:22" (3/3) ... [2025-03-03 14:18:22,209 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2025-03-03 14:18:22,218 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:18:22,221 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product30.cil.c that has 28 procedures, 604 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:18:22,273 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:18:22,281 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;@1912974e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:18:22,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:18:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 604 states, 467 states have (on average 1.6745182012847966) internal successors, (782), 487 states have internal predecessors, (782), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-03 14:18:22,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 14:18:22,298 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:22,299 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] [2025-03-03 14:18:22,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:22,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -458338266, now seen corresponding path program 1 times [2025-03-03 14:18:22,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:22,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924918249] [2025-03-03 14:18:22,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:22,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:22,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 14:18:22,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 14:18:22,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:22,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:22,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924918249] [2025-03-03 14:18:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924918249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:22,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:22,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431957027] [2025-03-03 14:18:22,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:22,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:22,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:22,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:22,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:22,956 INFO L87 Difference]: Start difference. First operand has 604 states, 467 states have (on average 1.6745182012847966) internal successors, (782), 487 states have internal predecessors, (782), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2025-03-03 14:18:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:23,166 INFO L93 Difference]: Finished difference Result 1205 states and 2008 transitions. [2025-03-03 14:18:23,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:23,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 67 [2025-03-03 14:18:23,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:23,181 INFO L225 Difference]: With dead ends: 1205 [2025-03-03 14:18:23,181 INFO L226 Difference]: Without dead ends: 609 [2025-03-03 14:18:23,192 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 [2025-03-03 14:18:23,196 INFO L435 NwaCegarLoop]: 984 mSDtfsCounter, 91 mSDsluCounter, 4834 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5818 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 [2025-03-03 14:18:23,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5818 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:18:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2025-03-03 14:18:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 607. [2025-03-03 14:18:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 470 states have (on average 1.6680851063829787) internal successors, (784), 490 states have internal predecessors, (784), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2025-03-03 14:18:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1001 transitions. [2025-03-03 14:18:23,275 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1001 transitions. Word has length 67 [2025-03-03 14:18:23,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:23,277 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 1001 transitions. [2025-03-03 14:18:23,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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) [2025-03-03 14:18:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1001 transitions. [2025-03-03 14:18:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 14:18:23,283 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:23,283 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] [2025-03-03 14:18:23,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:18:23,284 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:23,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash 505168755, now seen corresponding path program 1 times [2025-03-03 14:18:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:23,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229653554] [2025-03-03 14:18:23,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:23,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:23,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 14:18:23,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 14:18:23,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:23,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:23,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:23,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229653554] [2025-03-03 14:18:23,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229653554] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:23,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:23,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:23,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722690575] [2025-03-03 14:18:23,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:23,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:23,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:23,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:23,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:23,437 INFO L87 Difference]: Start difference. First operand 607 states and 1001 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), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:23,545 INFO L93 Difference]: Finished difference Result 1196 states and 1983 transitions. [2025-03-03 14:18:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:23,546 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), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-03-03 14:18:23,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:23,552 INFO L225 Difference]: With dead ends: 1196 [2025-03-03 14:18:23,553 INFO L226 Difference]: Without dead ends: 583 [2025-03-03 14:18:23,556 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 [2025-03-03 14:18:23,557 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 14 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2908 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 [2025-03-03 14:18:23,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2908 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2025-03-03 14:18:23,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2025-03-03 14:18:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 449 states have (on average 1.6592427616926504) internal successors, (745), 467 states have internal predecessors, (745), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 958 transitions. [2025-03-03 14:18:23,595 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 958 transitions. Word has length 68 [2025-03-03 14:18:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:23,596 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 958 transitions. [2025-03-03 14:18:23,596 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), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:18:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 958 transitions. [2025-03-03 14:18:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 14:18:23,598 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:23,598 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] [2025-03-03 14:18:23,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:18:23,599 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:23,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:23,599 INFO L85 PathProgramCache]: Analyzing trace with hash 828144982, now seen corresponding path program 1 times [2025-03-03 14:18:23,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:23,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967845266] [2025-03-03 14:18:23,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:23,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:23,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 14:18:23,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 14:18:23,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:23,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:23,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:23,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967845266] [2025-03-03 14:18:23,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967845266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:23,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:23,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:23,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049537432] [2025-03-03 14:18:23,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:23,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:23,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:23,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:23,861 INFO L87 Difference]: Start difference. First operand 583 states and 958 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-03 14:18:23,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:23,955 INFO L93 Difference]: Finished difference Result 1159 states and 1915 transitions. [2025-03-03 14:18:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 68 [2025-03-03 14:18:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:23,961 INFO L225 Difference]: With dead ends: 1159 [2025-03-03 14:18:23,961 INFO L226 Difference]: Without dead ends: 577 [2025-03-03 14:18:23,964 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 [2025-03-03 14:18:23,965 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 77 mSDsluCounter, 4665 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5612 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 [2025-03-03 14:18:23,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5612 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2025-03-03 14:18:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2025-03-03 14:18:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 443 states have (on average 1.652370203160271) internal successors, (732), 461 states have internal predecessors, (732), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 945 transitions. [2025-03-03 14:18:23,995 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 945 transitions. Word has length 68 [2025-03-03 14:18:23,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:23,996 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 945 transitions. [2025-03-03 14:18:23,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2025-03-03 14:18:23,997 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 945 transitions. [2025-03-03 14:18:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 14:18:23,999 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:23,999 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] [2025-03-03 14:18:23,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:18:23,999 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:24,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1435692416, now seen corresponding path program 1 times [2025-03-03 14:18:24,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:24,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932424093] [2025-03-03 14:18:24,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:24,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:24,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 14:18:24,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 14:18:24,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:24,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:24,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932424093] [2025-03-03 14:18:24,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932424093] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:24,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:24,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:24,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351254195] [2025-03-03 14:18:24,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:24,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:24,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:24,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:24,220 INFO L87 Difference]: Start difference. First operand 577 states and 945 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2025-03-03 14:18:24,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:24,314 INFO L93 Difference]: Finished difference Result 1147 states and 1889 transitions. [2025-03-03 14:18:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 69 [2025-03-03 14:18:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:24,320 INFO L225 Difference]: With dead ends: 1147 [2025-03-03 14:18:24,320 INFO L226 Difference]: Without dead ends: 571 [2025-03-03 14:18:24,322 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 [2025-03-03 14:18:24,323 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 63 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5552 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 [2025-03-03 14:18:24,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5552 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:24,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2025-03-03 14:18:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2025-03-03 14:18:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 437 states have (on average 1.6453089244851258) internal successors, (719), 455 states have internal predecessors, (719), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 932 transitions. [2025-03-03 14:18:24,351 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 932 transitions. Word has length 69 [2025-03-03 14:18:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:24,351 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 932 transitions. [2025-03-03 14:18:24,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2025-03-03 14:18:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 932 transitions. [2025-03-03 14:18:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:18:24,352 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:24,352 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] [2025-03-03 14:18:24,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:18:24,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:24,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:24,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2090320144, now seen corresponding path program 1 times [2025-03-03 14:18:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649847695] [2025-03-03 14:18:24,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:24,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:18:24,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:18:24,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:24,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:24,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:24,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649847695] [2025-03-03 14:18:24,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649847695] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:24,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:24,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355406172] [2025-03-03 14:18:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:24,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:24,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:24,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:24,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:24,503 INFO L87 Difference]: Start difference. First operand 571 states and 932 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-03 14:18:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:24,572 INFO L93 Difference]: Finished difference Result 1135 states and 1863 transitions. [2025-03-03 14:18:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 70 [2025-03-03 14:18:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:24,578 INFO L225 Difference]: With dead ends: 1135 [2025-03-03 14:18:24,579 INFO L226 Difference]: Without dead ends: 565 [2025-03-03 14:18:24,581 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 [2025-03-03 14:18:24,582 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 49 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5492 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 [2025-03-03 14:18:24,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5492 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-03 14:18:24,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2025-03-03 14:18:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.6380510440835268) internal successors, (706), 449 states have internal predecessors, (706), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 919 transitions. [2025-03-03 14:18:24,601 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 919 transitions. Word has length 70 [2025-03-03 14:18:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:24,602 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 919 transitions. [2025-03-03 14:18:24,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-03 14:18:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 919 transitions. [2025-03-03 14:18:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:18:24,603 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:24,603 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] [2025-03-03 14:18:24,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:18:24,603 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:24,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1181853480, now seen corresponding path program 1 times [2025-03-03 14:18:24,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:24,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664349828] [2025-03-03 14:18:24,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:24,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:24,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:18:24,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:18:24,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:24,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664349828] [2025-03-03 14:18:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664349828] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:18:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488354665] [2025-03-03 14:18:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:24,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:18:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:24,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:18:24,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:18:24,738 INFO L87 Difference]: Start difference. First operand 565 states and 919 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-03 14:18:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:24,815 INFO L93 Difference]: Finished difference Result 1123 states and 1837 transitions. [2025-03-03 14:18:24,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:18:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 70 [2025-03-03 14:18:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:24,820 INFO L225 Difference]: With dead ends: 1123 [2025-03-03 14:18:24,820 INFO L226 Difference]: Without dead ends: 565 [2025-03-03 14:18:24,822 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 [2025-03-03 14:18:24,823 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 24 mSDsluCounter, 4533 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5444 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 [2025-03-03 14:18:24,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5444 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-03 14:18:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2025-03-03 14:18:24,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.6357308584686774) internal successors, (705), 449 states have internal predecessors, (705), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 918 transitions. [2025-03-03 14:18:24,843 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 918 transitions. Word has length 70 [2025-03-03 14:18:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:24,843 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 918 transitions. [2025-03-03 14:18:24,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-03 14:18:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 918 transitions. [2025-03-03 14:18:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 14:18:24,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:24,844 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] [2025-03-03 14:18:24,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:18:24,844 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:24,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:24,845 INFO L85 PathProgramCache]: Analyzing trace with hash -104088358, now seen corresponding path program 1 times [2025-03-03 14:18:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:24,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811142902] [2025-03-03 14:18:24,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:24,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:24,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 14:18:24,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 14:18:24,872 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:24,872 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:24,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:24,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811142902] [2025-03-03 14:18:24,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811142902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:24,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:24,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50012452] [2025-03-03 14:18:24,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:24,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:24,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:24,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:24,934 INFO L87 Difference]: Start difference. First operand 565 states and 918 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-03-03 14:18:24,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:24,977 INFO L93 Difference]: Finished difference Result 1114 states and 1822 transitions. [2025-03-03 14:18:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:24,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 71 [2025-03-03 14:18:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:24,982 INFO L225 Difference]: With dead ends: 1114 [2025-03-03 14:18:24,982 INFO L226 Difference]: Without dead ends: 565 [2025-03-03 14:18:24,984 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 [2025-03-03 14:18:24,985 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 15 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2694 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 [2025-03-03 14:18:24,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2694 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-03 14:18:25,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2025-03-03 14:18:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.6334106728538282) internal successors, (704), 449 states have internal predecessors, (704), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 917 transitions. [2025-03-03 14:18:25,008 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 917 transitions. Word has length 71 [2025-03-03 14:18:25,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:25,008 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 917 transitions. [2025-03-03 14:18:25,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-03-03 14:18:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 917 transitions. [2025-03-03 14:18:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-03 14:18:25,010 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:25,010 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] [2025-03-03 14:18:25,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:18:25,010 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:25,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1079270840, now seen corresponding path program 1 times [2025-03-03 14:18:25,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:25,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503202360] [2025-03-03 14:18:25,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:25,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:25,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-03 14:18:25,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 14:18:25,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:25,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:25,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:25,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503202360] [2025-03-03 14:18:25,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503202360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:25,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:25,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916395068] [2025-03-03 14:18:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:25,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:25,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:25,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:25,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:25,092 INFO L87 Difference]: Start difference. First operand 565 states and 917 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-03 14:18:25,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:25,130 INFO L93 Difference]: Finished difference Result 1114 states and 1820 transitions. [2025-03-03 14:18:25,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:25,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 72 [2025-03-03 14:18:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:25,134 INFO L225 Difference]: With dead ends: 1114 [2025-03-03 14:18:25,134 INFO L226 Difference]: Without dead ends: 565 [2025-03-03 14:18:25,137 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 [2025-03-03 14:18:25,137 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 14 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2696 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 [2025-03-03 14:18:25,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2696 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-03 14:18:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2025-03-03 14:18:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.631090487238979) internal successors, (703), 449 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 916 transitions. [2025-03-03 14:18:25,154 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 916 transitions. Word has length 72 [2025-03-03 14:18:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:25,154 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 916 transitions. [2025-03-03 14:18:25,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-03 14:18:25,154 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 916 transitions. [2025-03-03 14:18:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-03 14:18:25,155 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:25,155 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] [2025-03-03 14:18:25,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:18:25,156 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:25,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash -442175971, now seen corresponding path program 1 times [2025-03-03 14:18:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043970510] [2025-03-03 14:18:25,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:25,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-03 14:18:25,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-03 14:18:25,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:25,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:25,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:25,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043970510] [2025-03-03 14:18:25,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043970510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:25,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:25,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:25,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410939638] [2025-03-03 14:18:25,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:25,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:25,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:25,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:25,228 INFO L87 Difference]: Start difference. First operand 565 states and 916 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, (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) [2025-03-03 14:18:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:25,289 INFO L93 Difference]: Finished difference Result 1114 states and 1818 transitions. [2025-03-03 14:18:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:25,289 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, (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 73 [2025-03-03 14:18:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:25,294 INFO L225 Difference]: With dead ends: 1114 [2025-03-03 14:18:25,294 INFO L226 Difference]: Without dead ends: 565 [2025-03-03 14:18:25,296 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 [2025-03-03 14:18:25,297 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 13 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2698 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 [2025-03-03 14:18:25,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2698 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-03 14:18:25,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2025-03-03 14:18:25,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.62877030162413) internal successors, (702), 449 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 915 transitions. [2025-03-03 14:18:25,314 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 915 transitions. Word has length 73 [2025-03-03 14:18:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:25,314 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 915 transitions. [2025-03-03 14:18:25,314 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, (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) [2025-03-03 14:18:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 915 transitions. [2025-03-03 14:18:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-03 14:18:25,316 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:25,317 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] [2025-03-03 14:18:25,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:18:25,317 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:25,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:25,317 INFO L85 PathProgramCache]: Analyzing trace with hash 86736859, now seen corresponding path program 1 times [2025-03-03 14:18:25,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956328484] [2025-03-03 14:18:25,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:25,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:25,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-03 14:18:25,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 14:18:25,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:25,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:25,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:25,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:25,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956328484] [2025-03-03 14:18:25,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956328484] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:25,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:25,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:25,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468014472] [2025-03-03 14:18:25,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:25,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:25,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:25,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:25,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:25,398 INFO L87 Difference]: Start difference. First operand 565 states and 915 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-03 14:18:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:25,433 INFO L93 Difference]: Finished difference Result 1114 states and 1816 transitions. [2025-03-03 14:18:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:18:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 74 [2025-03-03 14:18:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:25,439 INFO L225 Difference]: With dead ends: 1114 [2025-03-03 14:18:25,439 INFO L226 Difference]: Without dead ends: 565 [2025-03-03 14:18:25,441 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 [2025-03-03 14:18:25,441 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 12 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2700 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 [2025-03-03 14:18:25,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2700 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-03 14:18:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2025-03-03 14:18:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 431 states have (on average 1.6264501160092808) internal successors, (701), 449 states have internal predecessors, (701), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-03 14:18:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 914 transitions. [2025-03-03 14:18:25,460 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 914 transitions. Word has length 74 [2025-03-03 14:18:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:25,460 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 914 transitions. [2025-03-03 14:18:25,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-03 14:18:25,460 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 914 transitions. [2025-03-03 14:18:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-03 14:18:25,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:25,462 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] [2025-03-03 14:18:25,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 14:18:25,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:25,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:25,463 INFO L85 PathProgramCache]: Analyzing trace with hash -247710880, now seen corresponding path program 1 times [2025-03-03 14:18:25,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:25,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654738158] [2025-03-03 14:18:25,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:25,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:25,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-03 14:18:25,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 14:18:25,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:25,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:18:25,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654738158] [2025-03-03 14:18:25,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654738158] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009657965] [2025-03-03 14:18:25,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:25,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:25,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:25,647 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) [2025-03-03 14:18:25,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:18:25,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-03 14:18:25,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 14:18:25,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:25,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:25,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:18:25,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:18:25,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:25,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009657965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:25,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:25,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:18:25,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308351141] [2025-03-03 14:18:25,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:25,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:25,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:26,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:26,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:26,000 INFO L87 Difference]: Start difference. First operand 565 states and 914 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2025-03-03 14:18:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:26,060 INFO L93 Difference]: Finished difference Result 1606 states and 2630 transitions. [2025-03-03 14:18:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:26,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 75 [2025-03-03 14:18:26,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:26,068 INFO L225 Difference]: With dead ends: 1606 [2025-03-03 14:18:26,068 INFO L226 Difference]: Without dead ends: 1059 [2025-03-03 14:18:26,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:26,073 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 876 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1731 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 [2025-03-03 14:18:26,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1731 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:26,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2025-03-03 14:18:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1044. [2025-03-03 14:18:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 804 states have (on average 1.6393034825870647) internal successors, (1318), 839 states have internal predecessors, (1318), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 183 states have call predecessors, (193), 188 states have call successors, (193) [2025-03-03 14:18:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1702 transitions. [2025-03-03 14:18:26,114 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1702 transitions. Word has length 75 [2025-03-03 14:18:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:26,114 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1702 transitions. [2025-03-03 14:18:26,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2025-03-03 14:18:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1702 transitions. [2025-03-03 14:18:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-03 14:18:26,115 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:26,116 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, 1] [2025-03-03 14:18:26,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 14:18:26,316 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 [2025-03-03 14:18:26,316 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:26,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:26,317 INFO L85 PathProgramCache]: Analyzing trace with hash -374189112, now seen corresponding path program 1 times [2025-03-03 14:18:26,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:26,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674408254] [2025-03-03 14:18:26,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:26,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:26,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-03 14:18:26,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-03 14:18:26,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:26,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:18:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674408254] [2025-03-03 14:18:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674408254] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437799438] [2025-03-03 14:18:26,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:26,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:26,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:26,514 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) [2025-03-03 14:18:26,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:18:26,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-03 14:18:26,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-03 14:18:26,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:26,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:26,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 1494 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:18:26,784 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:18:26,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:26,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437799438] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:26,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:18:26,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458706306] [2025-03-03 14:18:26,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:26,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:18:26,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:26,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:18:26,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:26,823 INFO L87 Difference]: Start difference. First operand 1044 states and 1702 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2025-03-03 14:18:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:26,898 INFO L93 Difference]: Finished difference Result 2564 states and 4208 transitions. [2025-03-03 14:18:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:18:26,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 76 [2025-03-03 14:18:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:26,910 INFO L225 Difference]: With dead ends: 2564 [2025-03-03 14:18:26,910 INFO L226 Difference]: Without dead ends: 1538 [2025-03-03 14:18:26,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:18:26,916 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 876 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1786 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 [2025-03-03 14:18:26,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1786 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2025-03-03 14:18:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1490. [2025-03-03 14:18:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1150 states have (on average 1.651304347826087) internal successors, (1899), 1202 states have internal predecessors, (1899), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 261 states have call predecessors, (278), 268 states have call successors, (278) [2025-03-03 14:18:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2448 transitions. [2025-03-03 14:18:27,018 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2448 transitions. Word has length 76 [2025-03-03 14:18:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:27,019 INFO L471 AbstractCegarLoop]: Abstraction has 1490 states and 2448 transitions. [2025-03-03 14:18:27,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2025-03-03 14:18:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2448 transitions. [2025-03-03 14:18:27,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-03 14:18:27,020 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:27,020 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, 1, 1, 1] [2025-03-03 14:18:27,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 14:18:27,220 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 [2025-03-03 14:18:27,221 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:27,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash -431761971, now seen corresponding path program 1 times [2025-03-03 14:18:27,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:27,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148036418] [2025-03-03 14:18:27,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:27,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:27,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-03 14:18:27,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-03 14:18:27,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:27,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:27,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:27,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148036418] [2025-03-03 14:18:27,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148036418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:27,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:27,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:27,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62598345] [2025-03-03 14:18:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:27,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:27,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:27,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:27,337 INFO L87 Difference]: Start difference. First operand 1490 states and 2448 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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) [2025-03-03 14:18:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:27,847 INFO L93 Difference]: Finished difference Result 4394 states and 7393 transitions. [2025-03-03 14:18:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 78 [2025-03-03 14:18:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:27,871 INFO L225 Difference]: With dead ends: 4394 [2025-03-03 14:18:27,871 INFO L226 Difference]: Without dead ends: 2922 [2025-03-03 14:18:27,881 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 [2025-03-03 14:18:27,881 INFO L435 NwaCegarLoop]: 1050 mSDtfsCounter, 909 mSDsluCounter, 3758 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 4808 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:27,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 4808 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2025-03-03 14:18:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2875. [2025-03-03 14:18:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2875 states, 2221 states have (on average 1.6515083295812698) internal successors, (3668), 2321 states have internal predecessors, (3668), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (637), 507 states have call predecessors, (637), 517 states have call successors, (637) [2025-03-03 14:18:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4826 transitions. [2025-03-03 14:18:28,014 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4826 transitions. Word has length 78 [2025-03-03 14:18:28,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:28,014 INFO L471 AbstractCegarLoop]: Abstraction has 2875 states and 4826 transitions. [2025-03-03 14:18:28,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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) [2025-03-03 14:18:28,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4826 transitions. [2025-03-03 14:18:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 14:18:28,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:28,015 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, 1, 1, 1, 1] [2025-03-03 14:18:28,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 14:18:28,015 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:28,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash 606800462, now seen corresponding path program 1 times [2025-03-03 14:18:28,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:28,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418977716] [2025-03-03 14:18:28,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:28,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:28,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:18:28,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:18:28,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:28,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:18:28,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:28,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418977716] [2025-03-03 14:18:28,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418977716] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:28,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102065829] [2025-03-03 14:18:28,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:28,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:28,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:28,207 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) [2025-03-03 14:18:28,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:18:28,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:18:28,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:18:28,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:28,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:28,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:18:28,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:28,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:18:28,591 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:28,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102065829] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:28,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:28,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-03 14:18:28,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245575466] [2025-03-03 14:18:28,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:28,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:28,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:28,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:18:28,592 INFO L87 Difference]: Start difference. First operand 2875 states and 4826 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 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) [2025-03-03 14:18:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:29,340 INFO L93 Difference]: Finished difference Result 7780 states and 13338 transitions. [2025-03-03 14:18:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:29,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 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 79 [2025-03-03 14:18:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:29,371 INFO L225 Difference]: With dead ends: 7780 [2025-03-03 14:18:29,371 INFO L226 Difference]: Without dead ends: 4923 [2025-03-03 14:18:29,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:18:29,389 INFO L435 NwaCegarLoop]: 944 mSDtfsCounter, 776 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 4353 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:29,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 4353 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:18:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2025-03-03 14:18:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4880. [2025-03-03 14:18:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4880 states, 3766 states have (on average 1.6059479553903346) internal successors, (6048), 3932 states have internal predecessors, (6048), 874 states have call successors, (874), 232 states have call predecessors, (874), 239 states have return successors, (1207), 855 states have call predecessors, (1207), 868 states have call successors, (1207) [2025-03-03 14:18:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 8129 transitions. [2025-03-03 14:18:29,591 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 8129 transitions. Word has length 79 [2025-03-03 14:18:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:29,591 INFO L471 AbstractCegarLoop]: Abstraction has 4880 states and 8129 transitions. [2025-03-03 14:18:29,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 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) [2025-03-03 14:18:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 8129 transitions. [2025-03-03 14:18:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 14:18:29,592 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:29,592 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, 1, 1, 1, 1] [2025-03-03 14:18:29,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 14:18:29,793 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 [2025-03-03 14:18:29,793 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:29,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:29,794 INFO L85 PathProgramCache]: Analyzing trace with hash -467831463, now seen corresponding path program 1 times [2025-03-03 14:18:29,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:29,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163678226] [2025-03-03 14:18:29,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:29,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:29,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:18:29,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:18:29,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:29,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:18:29,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:29,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163678226] [2025-03-03 14:18:29,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163678226] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:29,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:29,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:29,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003864426] [2025-03-03 14:18:29,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:29,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:29,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:29,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:29,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:29,871 INFO L87 Difference]: Start difference. First operand 4880 states and 8129 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:18:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:30,138 INFO L93 Difference]: Finished difference Result 9766 states and 16433 transitions. [2025-03-03 14:18:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:30,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2025-03-03 14:18:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:30,179 INFO L225 Difference]: With dead ends: 9766 [2025-03-03 14:18:30,179 INFO L226 Difference]: Without dead ends: 4904 [2025-03-03 14:18:30,205 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 [2025-03-03 14:18:30,206 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 12 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:30,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2664 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:18:30,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4904 states. [2025-03-03 14:18:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4904 to 4888. [2025-03-03 14:18:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4888 states, 3772 states have (on average 1.6044538706256628) internal successors, (6052), 3938 states have internal predecessors, (6052), 874 states have call successors, (874), 236 states have call predecessors, (874), 241 states have return successors, (1196), 853 states have call predecessors, (1196), 868 states have call successors, (1196) [2025-03-03 14:18:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4888 states to 4888 states and 8122 transitions. [2025-03-03 14:18:30,412 INFO L78 Accepts]: Start accepts. Automaton has 4888 states and 8122 transitions. Word has length 79 [2025-03-03 14:18:30,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:30,413 INFO L471 AbstractCegarLoop]: Abstraction has 4888 states and 8122 transitions. [2025-03-03 14:18:30,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:18:30,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4888 states and 8122 transitions. [2025-03-03 14:18:30,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-03 14:18:30,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:30,414 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, 1, 1, 1] [2025-03-03 14:18:30,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 14:18:30,414 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:30,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:30,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1287408658, now seen corresponding path program 1 times [2025-03-03 14:18:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:30,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454376837] [2025-03-03 14:18:30,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:30,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:30,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:18:30,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:18:30,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:30,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:18:30,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:30,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454376837] [2025-03-03 14:18:30,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454376837] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:30,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:30,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:30,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683353552] [2025-03-03 14:18:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:30,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:30,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:30,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:30,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:30,533 INFO L87 Difference]: Start difference. First operand 4888 states and 8122 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-03 14:18:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:31,225 INFO L93 Difference]: Finished difference Result 14597 states and 25277 transitions. [2025-03-03 14:18:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:31,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 87 [2025-03-03 14:18:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:31,299 INFO L225 Difference]: With dead ends: 14597 [2025-03-03 14:18:31,299 INFO L226 Difference]: Without dead ends: 9727 [2025-03-03 14:18:31,327 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 [2025-03-03 14:18:31,329 INFO L435 NwaCegarLoop]: 1013 mSDtfsCounter, 906 mSDsluCounter, 3658 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 4671 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:31,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 4671 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9727 states. [2025-03-03 14:18:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9727 to 9658. [2025-03-03 14:18:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9658 states, 7456 states have (on average 1.600456008583691) internal successors, (11933), 7782 states have internal predecessors, (11933), 1720 states have call successors, (1720), 466 states have call predecessors, (1720), 481 states have return successors, (2914), 1689 states have call predecessors, (2914), 1710 states have call successors, (2914) [2025-03-03 14:18:31,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9658 states to 9658 states and 16567 transitions. [2025-03-03 14:18:31,762 INFO L78 Accepts]: Start accepts. Automaton has 9658 states and 16567 transitions. Word has length 87 [2025-03-03 14:18:31,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:31,762 INFO L471 AbstractCegarLoop]: Abstraction has 9658 states and 16567 transitions. [2025-03-03 14:18:31,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-03 14:18:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9658 states and 16567 transitions. [2025-03-03 14:18:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:18:31,764 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:31,764 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, 1, 1, 1, 1] [2025-03-03 14:18:31,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 14:18:31,765 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:31,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:31,765 INFO L85 PathProgramCache]: Analyzing trace with hash -72891041, now seen corresponding path program 1 times [2025-03-03 14:18:31,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:31,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696123366] [2025-03-03 14:18:31,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:31,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:31,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:18:31,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:18:31,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:31,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 14:18:31,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:31,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696123366] [2025-03-03 14:18:31,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696123366] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:31,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:31,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:31,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096500124] [2025-03-03 14:18:31,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:31,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:31,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:31,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:31,833 INFO L87 Difference]: Start difference. First operand 9658 states and 16567 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-03-03 14:18:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:32,238 INFO L93 Difference]: Finished difference Result 19370 states and 33707 transitions. [2025-03-03 14:18:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:32,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 88 [2025-03-03 14:18:32,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:32,297 INFO L225 Difference]: With dead ends: 19370 [2025-03-03 14:18:32,297 INFO L226 Difference]: Without dead ends: 9730 [2025-03-03 14:18:32,336 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 [2025-03-03 14:18:32,336 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 12 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:32,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2655 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9730 states. [2025-03-03 14:18:32,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9730 to 9698. [2025-03-03 14:18:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9698 states, 7492 states have (on average 1.5981046449546183) internal successors, (11973), 7810 states have internal predecessors, (11973), 1720 states have call successors, (1720), 482 states have call predecessors, (1720), 485 states have return successors, (2898), 1685 states have call predecessors, (2898), 1710 states have call successors, (2898) [2025-03-03 14:18:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9698 states to 9698 states and 16591 transitions. [2025-03-03 14:18:32,767 INFO L78 Accepts]: Start accepts. Automaton has 9698 states and 16591 transitions. Word has length 88 [2025-03-03 14:18:32,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:32,768 INFO L471 AbstractCegarLoop]: Abstraction has 9698 states and 16591 transitions. [2025-03-03 14:18:32,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-03-03 14:18:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 9698 states and 16591 transitions. [2025-03-03 14:18:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:18:32,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:32,770 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, 1, 1, 1] [2025-03-03 14:18:32,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 14:18:32,770 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:32,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:32,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1053071450, now seen corresponding path program 1 times [2025-03-03 14:18:32,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:32,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540023248] [2025-03-03 14:18:32,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:32,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:32,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:18:32,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:18:32,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:32,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:18:32,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540023248] [2025-03-03 14:18:32,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540023248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:32,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:32,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:32,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473711814] [2025-03-03 14:18:32,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:32,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:32,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:32,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:32,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:32,920 INFO L87 Difference]: Start difference. First operand 9698 states and 16591 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2025-03-03 14:18:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:34,008 INFO L93 Difference]: Finished difference Result 29105 states and 52866 transitions. [2025-03-03 14:18:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 97 [2025-03-03 14:18:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:34,228 INFO L225 Difference]: With dead ends: 29105 [2025-03-03 14:18:34,228 INFO L226 Difference]: Without dead ends: 19425 [2025-03-03 14:18:34,270 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 [2025-03-03 14:18:34,271 INFO L435 NwaCegarLoop]: 986 mSDtfsCounter, 903 mSDsluCounter, 3588 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:34,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 4574 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19425 states. [2025-03-03 14:18:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19425 to 19324. [2025-03-03 14:18:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19324 states, 14932 states have (on average 1.5946289847307795) internal successors, (23811), 15562 states have internal predecessors, (23811), 3418 states have call successors, (3418), 958 states have call predecessors, (3418), 973 states have return successors, (7478), 3363 states have call predecessors, (7478), 3400 states have call successors, (7478) [2025-03-03 14:18:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19324 states to 19324 states and 34707 transitions. [2025-03-03 14:18:35,066 INFO L78 Accepts]: Start accepts. Automaton has 19324 states and 34707 transitions. Word has length 97 [2025-03-03 14:18:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:35,067 INFO L471 AbstractCegarLoop]: Abstraction has 19324 states and 34707 transitions. [2025-03-03 14:18:35,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2025-03-03 14:18:35,067 INFO L276 IsEmpty]: Start isEmpty. Operand 19324 states and 34707 transitions. [2025-03-03 14:18:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 14:18:35,069 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:35,069 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, 1, 1, 1, 1] [2025-03-03 14:18:35,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 14:18:35,069 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:35,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash -248188242, now seen corresponding path program 1 times [2025-03-03 14:18:35,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:35,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068409674] [2025-03-03 14:18:35,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:35,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:35,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:18:35,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:18:35,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:35,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 14:18:35,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068409674] [2025-03-03 14:18:35,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068409674] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:35,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:35,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:35,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579779834] [2025-03-03 14:18:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:35,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:35,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:35,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:35,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:35,142 INFO L87 Difference]: Start difference. First operand 19324 states and 34707 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-03 14:18:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:35,982 INFO L93 Difference]: Finished difference Result 38774 states and 71249 transitions. [2025-03-03 14:18:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2025-03-03 14:18:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:36,128 INFO L225 Difference]: With dead ends: 38774 [2025-03-03 14:18:36,128 INFO L226 Difference]: Without dead ends: 19468 [2025-03-03 14:18:36,229 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 [2025-03-03 14:18:36,229 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 11 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2658 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 [2025-03-03 14:18:36,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2658 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19468 states. [2025-03-03 14:18:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19468 to 19404. [2025-03-03 14:18:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19404 states, 15004 states have (on average 1.5923087176752866) internal successors, (23891), 15634 states have internal predecessors, (23891), 3418 states have call successors, (3418), 974 states have call predecessors, (3418), 981 states have return successors, (7458), 3355 states have call predecessors, (7458), 3400 states have call successors, (7458) [2025-03-03 14:18:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19404 states to 19404 states and 34767 transitions. [2025-03-03 14:18:37,147 INFO L78 Accepts]: Start accepts. Automaton has 19404 states and 34767 transitions. Word has length 98 [2025-03-03 14:18:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:37,147 INFO L471 AbstractCegarLoop]: Abstraction has 19404 states and 34767 transitions. [2025-03-03 14:18:37,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-03 14:18:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 19404 states and 34767 transitions. [2025-03-03 14:18:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-03 14:18:37,150 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:37,150 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, 1, 1, 1] [2025-03-03 14:18:37,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 14:18:37,151 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:37,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash -884546476, now seen corresponding path program 1 times [2025-03-03 14:18:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:37,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89372563] [2025-03-03 14:18:37,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:37,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:37,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-03 14:18:37,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-03 14:18:37,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:37,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:18:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:37,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89372563] [2025-03-03 14:18:37,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89372563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:37,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:37,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:37,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925779691] [2025-03-03 14:18:37,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:37,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:37,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:37,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:37,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:37,312 INFO L87 Difference]: Start difference. First operand 19404 states and 34767 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-03 14:18:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:39,228 INFO L93 Difference]: Finished difference Result 58349 states and 114755 transitions. [2025-03-03 14:18:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 108 [2025-03-03 14:18:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:39,784 INFO L225 Difference]: With dead ends: 58349 [2025-03-03 14:18:39,784 INFO L226 Difference]: Without dead ends: 38963 [2025-03-03 14:18:39,901 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 [2025-03-03 14:18:39,903 INFO L435 NwaCegarLoop]: 1016 mSDtfsCounter, 898 mSDsluCounter, 3692 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 4708 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:39,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 4708 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:18:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38963 states. [2025-03-03 14:18:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38963 to 38798. [2025-03-03 14:18:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38798 states, 30004 states have (on average 1.5898213571523796) internal successors, (47701), 31258 states have internal predecessors, (47701), 6820 states have call successors, (6820), 1942 states have call predecessors, (6820), 1973 states have return successors, (20622), 6717 states have call predecessors, (20622), 6786 states have call successors, (20622) [2025-03-03 14:18:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38798 states to 38798 states and 75143 transitions. [2025-03-03 14:18:41,497 INFO L78 Accepts]: Start accepts. Automaton has 38798 states and 75143 transitions. Word has length 108 [2025-03-03 14:18:41,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:41,498 INFO L471 AbstractCegarLoop]: Abstraction has 38798 states and 75143 transitions. [2025-03-03 14:18:41,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-03 14:18:41,498 INFO L276 IsEmpty]: Start isEmpty. Operand 38798 states and 75143 transitions. [2025-03-03 14:18:41,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-03 14:18:41,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:41,502 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, 1, 1, 1, 1, 1] [2025-03-03 14:18:41,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 14:18:41,503 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:41,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:41,504 INFO L85 PathProgramCache]: Analyzing trace with hash -678680440, now seen corresponding path program 1 times [2025-03-03 14:18:41,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:41,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610934168] [2025-03-03 14:18:41,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:41,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:41,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:18:41,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:18:41,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:41,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:18:41,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610934168] [2025-03-03 14:18:41,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610934168] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:18:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952965994] [2025-03-03 14:18:41,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:41,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:41,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:18:41,924 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) [2025-03-03 14:18:41,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:18:42,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:18:42,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:18:42,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:42,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:42,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:18:42,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:18:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:18:42,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:18:42,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952965994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:42,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:18:42,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-03-03 14:18:42,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972214775] [2025-03-03 14:18:42,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:42,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:18:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:42,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:18:42,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-03-03 14:18:42,399 INFO L87 Difference]: Start difference. First operand 38798 states and 75143 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 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) [2025-03-03 14:18:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:50,157 INFO L93 Difference]: Finished difference Result 138509 states and 292363 transitions. [2025-03-03 14:18:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 14:18:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 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 137 [2025-03-03 14:18:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:51,070 INFO L225 Difference]: With dead ends: 138509 [2025-03-03 14:18:51,070 INFO L226 Difference]: Without dead ends: 99729 [2025-03-03 14:18:51,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-03-03 14:18:51,444 INFO L435 NwaCegarLoop]: 603 mSDtfsCounter, 3120 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 6763 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3298 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 7440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 6763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:51,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3298 Valid, 2435 Invalid, 7440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 6763 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-03-03 14:18:51,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99729 states. [2025-03-03 14:18:56,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99729 to 98456. [2025-03-03 14:18:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98456 states, 76218 states have (on average 1.583418615025322) internal successors, (120685), 79256 states have internal predecessors, (120685), 17064 states have call successors, (17064), 4838 states have call predecessors, (17064), 5173 states have return successors, (64132), 17097 states have call predecessors, (64132), 16998 states have call successors, (64132) [2025-03-03 14:18:57,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98456 states to 98456 states and 201881 transitions. [2025-03-03 14:18:57,369 INFO L78 Accepts]: Start accepts. Automaton has 98456 states and 201881 transitions. Word has length 137 [2025-03-03 14:18:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:57,370 INFO L471 AbstractCegarLoop]: Abstraction has 98456 states and 201881 transitions. [2025-03-03 14:18:57,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 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) [2025-03-03 14:18:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 98456 states and 201881 transitions. [2025-03-03 14:18:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-03 14:18:57,371 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:57,371 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, 1, 1, 1, 1] [2025-03-03 14:18:57,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 14:18:57,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:18:57,575 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:57,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1831302599, now seen corresponding path program 1 times [2025-03-03 14:18:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125096564] [2025-03-03 14:18:57,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:57,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-03 14:18:57,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-03 14:18:57,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:57,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:18:57,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:57,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125096564] [2025-03-03 14:18:57,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125096564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:57,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:57,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:57,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840805217] [2025-03-03 14:18:57,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:57,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:57,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:57,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:57,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:57,641 INFO L87 Difference]: Start difference. First operand 98456 states and 201881 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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) [2025-03-03 14:19:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:19:04,084 INFO L93 Difference]: Finished difference Result 197790 states and 426174 transitions. [2025-03-03 14:19:04,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:19:04,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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) Word has length 109 [2025-03-03 14:19:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted.