./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product27.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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:36:50,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:36:50,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:36:50,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:36:50,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:36:50,529 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:36:50,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:36:50,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:36:50,530 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:36:50,530 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:36:50,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:36:50,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:36:50,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:36:50,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:36:50,530 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:36:50,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:36:50,531 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:36:50,532 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:50,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:36:50,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:36:50,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:36:50,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:36:50,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:36:50,533 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:36:50,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:36:50,533 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 -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2025-03-16 18:36:50,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:36:50,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:36:50,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:36:50,786 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:36:50,786 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:36:50,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2025-03-16 18:36:51,915 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb35cf0b8/c294af4e476742ab8606c2e3564a01ee/FLAGc26e7ef8f [2025-03-16 18:36:52,322 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:36:52,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2025-03-16 18:36:52,350 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb35cf0b8/c294af4e476742ab8606c2e3564a01ee/FLAGc26e7ef8f [2025-03-16 18:36:52,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb35cf0b8/c294af4e476742ab8606c2e3564a01ee [2025-03-16 18:36:52,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:36:52,517 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:36:52,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:52,525 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:36:52,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:36:52,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:52" (1/1) ... [2025-03-16 18:36:52,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d995cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:52, skipping insertion in model container [2025-03-16 18:36:52,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:52" (1/1) ... [2025-03-16 18:36:52,595 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:36:53,072 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_product27.cil.c[73003,73016] [2025-03-16 18:36:53,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:53,091 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:36:53,099 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2025-03-16 18:36:53,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1613] [2025-03-16 18:36:53,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1707] [2025-03-16 18:36:53,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1825] [2025-03-16 18:36:53,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2012] [2025-03-16 18:36:53,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2030] [2025-03-16 18:36:53,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2381] [2025-03-16 18:36:53,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3042] [2025-03-16 18:36:53,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3077] [2025-03-16 18:36:53,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3443] [2025-03-16 18:36:53,183 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_product27.cil.c[73003,73016] [2025-03-16 18:36:53,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:53,212 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:36:53,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53 WrapperNode [2025-03-16 18:36:53,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:53,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:53,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:36:53,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:36:53,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,286 INFO L138 Inliner]: procedures = 93, calls = 348, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1131 [2025-03-16 18:36:53,286 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:53,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:36:53,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:36:53,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:36:53,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,330 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:36:53,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,358 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:36:53,385 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:36:53,385 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:36:53,385 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:36:53,389 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (1/1) ... [2025-03-16 18:36:53,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:53,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 18:36:53,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 18:36:53,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:36:53,439 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:36:53,439 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:36:53,440 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:36:53,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:36:53,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:36:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:36:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:36:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:36:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:36:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:36:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:36:53,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:36:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:36:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:36:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:36:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:36:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:36:53,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:36:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:36:53,444 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:36:53,619 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:36:53,621 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:36:53,664 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L366: #res := ~retValue_acc~4; [2025-03-16 18:36:53,691 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1744: #res := ~retValue_acc~17; [2025-03-16 18:36:53,721 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1601: #res := ~retValue_acc~15; [2025-03-16 18:36:53,949 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L880: #res#1 := ~retValue_acc~9#1; [2025-03-16 18:36:53,949 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L851-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~8#1; [2025-03-16 18:36:53,961 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1015: #res := ~retValue_acc~13; [2025-03-16 18:36:54,020 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L486-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~6#1; [2025-03-16 18:36:54,020 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L499-1: isIdle_#res#1 := isIdle_~retValue_acc~7#1; [2025-03-16 18:36:54,190 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1001-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~12#1; [2025-03-16 18:36:54,195 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3039: #res := ~retValue_acc~24; [2025-03-16 18:36:54,206 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1822: #res := ~retValue_acc~19; [2025-03-16 18:36:54,208 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L141: #res := ~retValue_acc~0; [2025-03-16 18:36:54,211 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L314: #res := ~retValue_acc~1; [2025-03-16 18:36:54,227 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L970: #res := ~retValue_acc~11; [2025-03-16 18:36:54,330 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1783: #res := ~retValue_acc~18; [2025-03-16 18:36:54,352 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L357: #res := ~retValue_acc~3; [2025-03-16 18:36:54,388 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L406-1: isEmpty_#res#1 := isEmpty_~retValue_acc~5#1; [2025-03-16 18:36:54,432 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2728: #res := ~retValue_acc~23; [2025-03-16 18:36:54,481 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3074-1: valid_product_#res#1 := valid_product_~retValue_acc~26#1; [2025-03-16 18:36:54,481 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2378-1: main_#res#1 := main_~retValue_acc~21#1; [2025-03-16 18:36:54,510 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2492: #res := ~retValue_acc~22; [2025-03-16 18:36:54,600 INFO L? ?]: Removed 468 outVars from TransFormulas that were not future-live. [2025-03-16 18:36:54,600 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:36:54,621 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:36:54,624 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:36:54,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:54 BoogieIcfgContainer [2025-03-16 18:36:54,625 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:36:54,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:36:54,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:36:54,630 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:36:54,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:36:52" (1/3) ... [2025-03-16 18:36:54,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296dea17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:54, skipping insertion in model container [2025-03-16 18:36:54,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:53" (2/3) ... [2025-03-16 18:36:54,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296dea17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:54, skipping insertion in model container [2025-03-16 18:36:54,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:54" (3/3) ... [2025-03-16 18:36:54,632 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2025-03-16 18:36:54,641 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:36:54,642 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product27.cil.c that has 28 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:36:54,704 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:36:54,712 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;@f4e5a39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:36:54,712 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:36:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 453 states have (on average 1.6799116997792494) internal successors, (761), 471 states have internal predecessors, (761), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2025-03-16 18:36:54,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-16 18:36:54,730 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:54,731 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:54,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:54,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:54,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1255051944, now seen corresponding path program 1 times [2025-03-16 18:36:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:54,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740062230] [2025-03-16 18:36:54,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:54,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:54,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-16 18:36:54,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-16 18:36:54,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:54,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:55,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:55,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740062230] [2025-03-16 18:36:55,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740062230] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:55,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:55,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:55,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75771807] [2025-03-16 18:36:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:55,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:55,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:55,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:55,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:55,420 INFO L87 Difference]: Start difference. First operand has 590 states, 453 states have (on average 1.6799116997792494) internal successors, (761), 471 states have internal predecessors, (761), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:55,623 INFO L93 Difference]: Finished difference Result 1181 states and 1970 transitions. [2025-03-16 18:36:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:55,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 109 [2025-03-16 18:36:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:55,641 INFO L225 Difference]: With dead ends: 1181 [2025-03-16 18:36:55,641 INFO L226 Difference]: Without dead ends: 596 [2025-03-16 18:36:55,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:55,655 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 91 mSDsluCounter, 4729 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5692 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:55,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5692 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:36:55,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2025-03-16 18:36:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 594. [2025-03-16 18:36:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 457 states have (on average 1.6717724288840263) internal successors, (764), 475 states have internal predecessors, (764), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2025-03-16 18:36:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 981 transitions. [2025-03-16 18:36:55,746 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 981 transitions. Word has length 109 [2025-03-16 18:36:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:55,747 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 981 transitions. [2025-03-16 18:36:55,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:55,748 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 981 transitions. [2025-03-16 18:36:55,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-16 18:36:55,754 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:55,754 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:55,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:36:55,755 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:55,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1448179314, now seen corresponding path program 1 times [2025-03-16 18:36:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560288234] [2025-03-16 18:36:55,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:55,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-16 18:36:55,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-16 18:36:55,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:55,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:55,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560288234] [2025-03-16 18:36:55,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560288234] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:55,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:55,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553591733] [2025-03-16 18:36:55,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:55,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:55,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:55,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:55,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:55,920 INFO L87 Difference]: Start difference. First operand 594 states and 981 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:55,997 INFO L93 Difference]: Finished difference Result 1174 states and 1947 transitions. [2025-03-16 18:36:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:55,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 110 [2025-03-16 18:36:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:56,002 INFO L225 Difference]: With dead ends: 1174 [2025-03-16 18:36:56,003 INFO L226 Difference]: Without dead ends: 570 [2025-03-16 18:36:56,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:56,007 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 14 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:56,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2848 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-03-16 18:36:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-03-16 18:36:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 436 states have (on average 1.6628440366972477) internal successors, (725), 452 states have internal predecessors, (725), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 938 transitions. [2025-03-16 18:36:56,040 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 938 transitions. Word has length 110 [2025-03-16 18:36:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:56,040 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 938 transitions. [2025-03-16 18:36:56,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 938 transitions. [2025-03-16 18:36:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-16 18:36:56,045 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:56,045 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:56,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:36:56,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:56,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash 630875557, now seen corresponding path program 1 times [2025-03-16 18:36:56,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:56,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304018669] [2025-03-16 18:36:56,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:56,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:56,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-16 18:36:56,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-16 18:36:56,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:56,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:56,324 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:56,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:56,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304018669] [2025-03-16 18:36:56,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304018669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:56,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:56,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:56,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260671005] [2025-03-16 18:36:56,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:56,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:56,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:56,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:56,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:56,325 INFO L87 Difference]: Start difference. First operand 570 states and 938 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:56,449 INFO L93 Difference]: Finished difference Result 1137 states and 1879 transitions. [2025-03-16 18:36:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:56,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 110 [2025-03-16 18:36:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:56,457 INFO L225 Difference]: With dead ends: 1137 [2025-03-16 18:36:56,457 INFO L226 Difference]: Without dead ends: 564 [2025-03-16 18:36:56,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:56,462 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 77 mSDsluCounter, 4565 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5492 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:56,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5492 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:56,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-16 18:36:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-03-16 18:36:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.655813953488372) internal successors, (712), 446 states have internal predecessors, (712), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 925 transitions. [2025-03-16 18:36:56,500 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 925 transitions. Word has length 110 [2025-03-16 18:36:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:56,501 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 925 transitions. [2025-03-16 18:36:56,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 925 transitions. [2025-03-16 18:36:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-16 18:36:56,504 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:56,505 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:56,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:36:56,505 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:56,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1906475298, now seen corresponding path program 1 times [2025-03-16 18:36:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:56,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480488599] [2025-03-16 18:36:56,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:56,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-16 18:36:56,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-16 18:36:56,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:56,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:56,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:56,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480488599] [2025-03-16 18:36:56,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480488599] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:56,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:56,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184847739] [2025-03-16 18:36:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:56,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:56,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:56,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:56,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:56,715 INFO L87 Difference]: Start difference. First operand 564 states and 925 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:56,788 INFO L93 Difference]: Finished difference Result 1125 states and 1853 transitions. [2025-03-16 18:36:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:56,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 111 [2025-03-16 18:36:56,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:56,793 INFO L225 Difference]: With dead ends: 1125 [2025-03-16 18:36:56,793 INFO L226 Difference]: Without dead ends: 558 [2025-03-16 18:36:56,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:56,797 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 63 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5432 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:56,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5432 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:56,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-16 18:36:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-16 18:36:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6485849056603774) internal successors, (699), 440 states have internal predecessors, (699), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 912 transitions. [2025-03-16 18:36:56,835 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 912 transitions. Word has length 111 [2025-03-16 18:36:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:56,835 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 912 transitions. [2025-03-16 18:36:56,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 912 transitions. [2025-03-16 18:36:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-16 18:36:56,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:56,837 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:56,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:36:56,838 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:56,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1945592863, now seen corresponding path program 1 times [2025-03-16 18:36:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:56,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015499656] [2025-03-16 18:36:56,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:56,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:36:56,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:36:56,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:56,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:56,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:56,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015499656] [2025-03-16 18:36:56,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015499656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:57,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484274941] [2025-03-16 18:36:57,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:57,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:57,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:57,001 INFO L87 Difference]: Start difference. First operand 558 states and 912 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:57,092 INFO L93 Difference]: Finished difference Result 1113 states and 1827 transitions. [2025-03-16 18:36:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:57,092 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2025-03-16 18:36:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:57,096 INFO L225 Difference]: With dead ends: 1113 [2025-03-16 18:36:57,097 INFO L226 Difference]: Without dead ends: 552 [2025-03-16 18:36:57,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:57,101 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 49 mSDsluCounter, 4469 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:57,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5372 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:57,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-16 18:36:57,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-16 18:36:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 418 states have (on average 1.6411483253588517) internal successors, (686), 434 states have internal predecessors, (686), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:57,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 899 transitions. [2025-03-16 18:36:57,128 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 899 transitions. Word has length 112 [2025-03-16 18:36:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:57,128 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 899 transitions. [2025-03-16 18:36:57,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 899 transitions. [2025-03-16 18:36:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-16 18:36:57,131 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:57,131 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:57,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:36:57,131 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1585239465, now seen corresponding path program 1 times [2025-03-16 18:36:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722285831] [2025-03-16 18:36:57,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-16 18:36:57,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-16 18:36:57,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:57,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:57,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722285831] [2025-03-16 18:36:57,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722285831] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:57,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609395799] [2025-03-16 18:36:57,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:57,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:57,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:57,292 INFO L87 Difference]: Start difference. First operand 552 states and 899 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:57,354 INFO L93 Difference]: Finished difference Result 1101 states and 1801 transitions. [2025-03-16 18:36:57,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:57,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 112 [2025-03-16 18:36:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:57,361 INFO L225 Difference]: With dead ends: 1101 [2025-03-16 18:36:57,361 INFO L226 Difference]: Without dead ends: 552 [2025-03-16 18:36:57,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:57,365 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 24 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5324 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:57,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5324 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-16 18:36:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-16 18:36:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 418 states have (on average 1.638755980861244) internal successors, (685), 434 states have internal predecessors, (685), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 898 transitions. [2025-03-16 18:36:57,392 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 898 transitions. Word has length 112 [2025-03-16 18:36:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:57,393 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 898 transitions. [2025-03-16 18:36:57,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:57,394 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 898 transitions. [2025-03-16 18:36:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-16 18:36:57,396 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:57,396 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:57,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:36:57,397 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1986498660, now seen corresponding path program 1 times [2025-03-16 18:36:57,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839989920] [2025-03-16 18:36:57,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-16 18:36:57,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-16 18:36:57,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839989920] [2025-03-16 18:36:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839989920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:57,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243103955] [2025-03-16 18:36:57,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:57,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:57,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:57,494 INFO L87 Difference]: Start difference. First operand 552 states and 898 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:57,544 INFO L93 Difference]: Finished difference Result 1092 states and 1786 transitions. [2025-03-16 18:36:57,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:57,545 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2025-03-16 18:36:57,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:57,548 INFO L225 Difference]: With dead ends: 1092 [2025-03-16 18:36:57,549 INFO L226 Difference]: Without dead ends: 552 [2025-03-16 18:36:57,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:57,552 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 15 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:57,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2634 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-16 18:36:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-16 18:36:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 418 states have (on average 1.6363636363636365) internal successors, (684), 434 states have internal predecessors, (684), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 897 transitions. [2025-03-16 18:36:57,592 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 897 transitions. Word has length 113 [2025-03-16 18:36:57,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:57,592 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 897 transitions. [2025-03-16 18:36:57,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 897 transitions. [2025-03-16 18:36:57,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 18:36:57,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:57,595 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:57,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:36:57,595 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1358415687, now seen corresponding path program 1 times [2025-03-16 18:36:57,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075878744] [2025-03-16 18:36:57,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 18:36:57,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 18:36:57,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075878744] [2025-03-16 18:36:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075878744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61379558] [2025-03-16 18:36:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:57,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:57,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:57,700 INFO L87 Difference]: Start difference. First operand 552 states and 897 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:57,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:57,744 INFO L93 Difference]: Finished difference Result 1092 states and 1784 transitions. [2025-03-16 18:36:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:57,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2025-03-16 18:36:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:57,748 INFO L225 Difference]: With dead ends: 1092 [2025-03-16 18:36:57,748 INFO L226 Difference]: Without dead ends: 552 [2025-03-16 18:36:57,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:57,751 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 14 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:57,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2636 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-16 18:36:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-16 18:36:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 418 states have (on average 1.6339712918660287) internal successors, (683), 434 states have internal predecessors, (683), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 896 transitions. [2025-03-16 18:36:57,771 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 896 transitions. Word has length 114 [2025-03-16 18:36:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:57,771 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 896 transitions. [2025-03-16 18:36:57,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 896 transitions. [2025-03-16 18:36:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 18:36:57,773 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:57,773 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:57,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:36:57,774 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1574089409, now seen corresponding path program 1 times [2025-03-16 18:36:57,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962311703] [2025-03-16 18:36:57,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 18:36:57,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 18:36:57,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:57,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:57,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962311703] [2025-03-16 18:36:57,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962311703] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:57,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378997895] [2025-03-16 18:36:57,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:57,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:57,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:57,874 INFO L87 Difference]: Start difference. First operand 552 states and 896 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:57,917 INFO L93 Difference]: Finished difference Result 1092 states and 1782 transitions. [2025-03-16 18:36:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:57,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2025-03-16 18:36:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:57,921 INFO L225 Difference]: With dead ends: 1092 [2025-03-16 18:36:57,921 INFO L226 Difference]: Without dead ends: 552 [2025-03-16 18:36:57,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:57,925 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 13 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2638 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:57,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2638 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-16 18:36:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-16 18:36:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 418 states have (on average 1.631578947368421) internal successors, (682), 434 states have internal predecessors, (682), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 895 transitions. [2025-03-16 18:36:57,945 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 895 transitions. Word has length 115 [2025-03-16 18:36:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:57,945 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 895 transitions. [2025-03-16 18:36:57,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 895 transitions. [2025-03-16 18:36:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 18:36:57,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:57,948 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:57,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:36:57,948 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1538101622, now seen corresponding path program 1 times [2025-03-16 18:36:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928033892] [2025-03-16 18:36:57,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 18:36:57,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 18:36:57,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:36:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928033892] [2025-03-16 18:36:58,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928033892] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:58,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:58,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890610476] [2025-03-16 18:36:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:58,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:58,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:58,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:58,059 INFO L87 Difference]: Start difference. First operand 552 states and 895 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:58,105 INFO L93 Difference]: Finished difference Result 1092 states and 1780 transitions. [2025-03-16 18:36:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:58,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2025-03-16 18:36:58,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:58,111 INFO L225 Difference]: With dead ends: 1092 [2025-03-16 18:36:58,111 INFO L226 Difference]: Without dead ends: 552 [2025-03-16 18:36:58,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:58,115 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 12 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:58,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2640 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-16 18:36:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2025-03-16 18:36:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 418 states have (on average 1.6291866028708133) internal successors, (681), 434 states have internal predecessors, (681), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2025-03-16 18:36:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 894 transitions. [2025-03-16 18:36:58,137 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 894 transitions. Word has length 116 [2025-03-16 18:36:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:58,137 INFO L471 AbstractCegarLoop]: Abstraction has 552 states and 894 transitions. [2025-03-16 18:36:58,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 894 transitions. [2025-03-16 18:36:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-16 18:36:58,140 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:58,140 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:58,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:36:58,141 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:58,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash 326852322, now seen corresponding path program 1 times [2025-03-16 18:36:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064614697] [2025-03-16 18:36:58,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:58,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 18:36:58,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 18:36:58,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:58,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:36:58,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:58,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064614697] [2025-03-16 18:36:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064614697] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136993181] [2025-03-16 18:36:58,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:58,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:58,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:58,375 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:58,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:36:58,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 18:36:58,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 18:36:58,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:58,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:58,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:58,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:58,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136993181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:58,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:58,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-16 18:36:58,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340462506] [2025-03-16 18:36:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:58,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:58,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:58,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:58,849 INFO L87 Difference]: Start difference. First operand 552 states and 894 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:58,925 INFO L93 Difference]: Finished difference Result 1575 states and 2578 transitions. [2025-03-16 18:36:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:58,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2025-03-16 18:36:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:58,930 INFO L225 Difference]: With dead ends: 1575 [2025-03-16 18:36:58,931 INFO L226 Difference]: Without dead ends: 1037 [2025-03-16 18:36:58,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:58,933 INFO L435 NwaCegarLoop]: 1534 mSDtfsCounter, 819 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:58,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 2326 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:58,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2025-03-16 18:36:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 1022. [2025-03-16 18:36:58,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 782 states have (on average 1.639386189258312) internal successors, (1282), 813 states have internal predecessors, (1282), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2025-03-16 18:36:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1666 transitions. [2025-03-16 18:36:58,967 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1666 transitions. Word has length 117 [2025-03-16 18:36:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:58,968 INFO L471 AbstractCegarLoop]: Abstraction has 1022 states and 1666 transitions. [2025-03-16 18:36:58,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1666 transitions. [2025-03-16 18:36:58,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-16 18:36:58,971 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:58,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:58,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:59,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 18:36:59,177 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:59,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:59,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2020437679, now seen corresponding path program 1 times [2025-03-16 18:36:59,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:59,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755948018] [2025-03-16 18:36:59,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:59,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:59,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-16 18:36:59,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-16 18:36:59,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:59,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:36:59,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:59,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755948018] [2025-03-16 18:36:59,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755948018] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:59,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601104021] [2025-03-16 18:36:59,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:59,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:59,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:59,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:59,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:36:59,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-16 18:36:59,668 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-16 18:36:59,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:59,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:59,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:59,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:59,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:59,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601104021] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:59,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:59,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-16 18:36:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938634770] [2025-03-16 18:36:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:59,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:59,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:59,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:59,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:59,770 INFO L87 Difference]: Start difference. First operand 1022 states and 1666 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:59,848 INFO L93 Difference]: Finished difference Result 2515 states and 4124 transitions. [2025-03-16 18:36:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:59,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2025-03-16 18:36:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:59,860 INFO L225 Difference]: With dead ends: 2515 [2025-03-16 18:36:59,860 INFO L226 Difference]: Without dead ends: 1507 [2025-03-16 18:36:59,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:59,867 INFO L435 NwaCegarLoop]: 1593 mSDtfsCounter, 818 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:59,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 2386 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2025-03-16 18:36:59,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1459. [2025-03-16 18:36:59,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1119 states have (on average 1.6505808757819482) internal successors, (1847), 1165 states have internal predecessors, (1847), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2025-03-16 18:36:59,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2396 transitions. [2025-03-16 18:36:59,943 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2396 transitions. Word has length 118 [2025-03-16 18:36:59,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:59,943 INFO L471 AbstractCegarLoop]: Abstraction has 1459 states and 2396 transitions. [2025-03-16 18:36:59,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2396 transitions. [2025-03-16 18:36:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-16 18:36:59,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:59,948 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:59,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:37:00,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 18:37:00,152 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:00,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:00,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1410168252, now seen corresponding path program 1 times [2025-03-16 18:37:00,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:00,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015012436] [2025-03-16 18:37:00,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:00,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:00,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-16 18:37:00,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-16 18:37:00,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:00,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-16 18:37:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015012436] [2025-03-16 18:37:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015012436] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678696089] [2025-03-16 18:37:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:00,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:00,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:00,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:00,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:00,288 INFO L87 Difference]: Start difference. First operand 1459 states and 2396 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:37:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:00,804 INFO L93 Difference]: Finished difference Result 4321 states and 7215 transitions. [2025-03-16 18:37:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 120 [2025-03-16 18:37:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:00,824 INFO L225 Difference]: With dead ends: 4321 [2025-03-16 18:37:00,824 INFO L226 Difference]: Without dead ends: 2876 [2025-03-16 18:37:00,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:00,835 INFO L435 NwaCegarLoop]: 997 mSDtfsCounter, 888 mSDsluCounter, 3598 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 4595 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:00,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 4595 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:37:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2025-03-16 18:37:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2829. [2025-03-16 18:37:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2175 states have (on average 1.6528735632183909) internal successors, (3595), 2263 states have internal predecessors, (3595), 521 states have call successors, (521), 130 states have call predecessors, (521), 132 states have return successors, (615), 513 states have call predecessors, (615), 517 states have call successors, (615) [2025-03-16 18:37:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 4731 transitions. [2025-03-16 18:37:01,009 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 4731 transitions. Word has length 120 [2025-03-16 18:37:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:01,009 INFO L471 AbstractCegarLoop]: Abstraction has 2829 states and 4731 transitions. [2025-03-16 18:37:01,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:37:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 4731 transitions. [2025-03-16 18:37:01,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-03-16 18:37:01,015 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:01,015 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:01,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:37:01,015 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:01,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1562706878, now seen corresponding path program 1 times [2025-03-16 18:37:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:01,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412554696] [2025-03-16 18:37:01,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:01,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:01,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:37:01,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:37:01,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:01,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-16 18:37:01,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:01,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412554696] [2025-03-16 18:37:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412554696] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:37:01,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050961437] [2025-03-16 18:37:01,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:01,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:01,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:37:01,228 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:37:01,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:37:01,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-03-16 18:37:01,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-03-16 18:37:01,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:01,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:01,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:37:01,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:37:01,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:37:01,664 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:37:01,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050961437] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:01,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:37:01,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-16 18:37:01,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368383264] [2025-03-16 18:37:01,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:01,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:37:01,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:01,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:37:01,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:37:01,665 INFO L87 Difference]: Start difference. First operand 2829 states and 4731 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:37:02,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:02,091 INFO L93 Difference]: Finished difference Result 8205 states and 13906 transitions. [2025-03-16 18:37:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:37:02,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 121 [2025-03-16 18:37:02,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:02,136 INFO L225 Difference]: With dead ends: 8205 [2025-03-16 18:37:02,137 INFO L226 Difference]: Without dead ends: 5391 [2025-03-16 18:37:02,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:37:02,161 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 733 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:02,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1714 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:37:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2025-03-16 18:37:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 5354. [2025-03-16 18:37:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 4104 states have (on average 1.6208576998050683) internal successors, (6652), 4278 states have internal predecessors, (6652), 990 states have call successors, (990), 254 states have call predecessors, (990), 259 states have return successors, (1275), 977 states have call predecessors, (1275), 984 states have call successors, (1275) [2025-03-16 18:37:02,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 8917 transitions. [2025-03-16 18:37:02,432 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 8917 transitions. Word has length 121 [2025-03-16 18:37:02,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:02,433 INFO L471 AbstractCegarLoop]: Abstraction has 5354 states and 8917 transitions. [2025-03-16 18:37:02,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:37:02,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 8917 transitions. [2025-03-16 18:37:02,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-16 18:37:02,439 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:02,439 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:02,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 18:37:02,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:02,643 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:02,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:02,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1152164157, now seen corresponding path program 1 times [2025-03-16 18:37:02,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:02,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414888965] [2025-03-16 18:37:02,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:02,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:02,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:37:02,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:37:02,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:02,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:37:02,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414888965] [2025-03-16 18:37:02,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414888965] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:37:02,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274076095] [2025-03-16 18:37:02,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:02,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:02,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:37:02,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:37:02,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:37:03,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:37:03,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:37:03,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:03,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:03,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:37:03,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:37:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-16 18:37:03,180 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:37:03,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274076095] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:03,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:37:03,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2025-03-16 18:37:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318289916] [2025-03-16 18:37:03,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:03,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:37:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:03,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:37:03,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:03,181 INFO L87 Difference]: Start difference. First operand 5354 states and 8917 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:37:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:03,567 INFO L93 Difference]: Finished difference Result 15956 states and 26892 transitions. [2025-03-16 18:37:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:37:03,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2025-03-16 18:37:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:03,638 INFO L225 Difference]: With dead ends: 15956 [2025-03-16 18:37:03,638 INFO L226 Difference]: Without dead ends: 10619 [2025-03-16 18:37:03,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:03,668 INFO L435 NwaCegarLoop]: 943 mSDtfsCounter, 883 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:03,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1812 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10619 states. [2025-03-16 18:37:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10619 to 10516. [2025-03-16 18:37:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10516 states, 8088 states have (on average 1.6240108803165183) internal successors, (13135), 8416 states have internal predecessors, (13135), 1920 states have call successors, (1920), 490 states have call predecessors, (1920), 507 states have return successors, (2544), 1915 states have call predecessors, (2544), 1910 states have call successors, (2544) [2025-03-16 18:37:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10516 states to 10516 states and 17599 transitions. [2025-03-16 18:37:04,162 INFO L78 Accepts]: Start accepts. Automaton has 10516 states and 17599 transitions. Word has length 123 [2025-03-16 18:37:04,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:04,162 INFO L471 AbstractCegarLoop]: Abstraction has 10516 states and 17599 transitions. [2025-03-16 18:37:04,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:37:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10516 states and 17599 transitions. [2025-03-16 18:37:04,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-16 18:37:04,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:04,167 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:04,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 18:37:04,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 18:37:04,368 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:04,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 646605532, now seen corresponding path program 1 times [2025-03-16 18:37:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901273013] [2025-03-16 18:37:04,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:04,381 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:37:04,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:37:04,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:04,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:37:04,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:04,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901273013] [2025-03-16 18:37:04,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901273013] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:37:04,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935434214] [2025-03-16 18:37:04,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:04,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:37:04,546 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:37:04,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 18:37:04,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:37:04,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:37:04,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:04,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:04,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:37:04,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:37:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:37:05,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:37:05,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935434214] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:05,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:37:05,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-16 18:37:05,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174542418] [2025-03-16 18:37:05,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:05,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:05,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:05,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:05,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-16 18:37:05,028 INFO L87 Difference]: Start difference. First operand 10516 states and 17599 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-16 18:37:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:06,122 INFO L93 Difference]: Finished difference Result 19863 states and 33310 transitions. [2025-03-16 18:37:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 123 [2025-03-16 18:37:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:06,188 INFO L225 Difference]: With dead ends: 19863 [2025-03-16 18:37:06,188 INFO L226 Difference]: Without dead ends: 9361 [2025-03-16 18:37:06,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-03-16 18:37:06,239 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 753 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:06,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 4114 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 18:37:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9361 states. [2025-03-16 18:37:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9361 to 9339. [2025-03-16 18:37:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9339 states, 7199 states have (on average 1.6109181830809836) internal successors, (11597), 7474 states have internal predecessors, (11597), 1678 states have call successors, (1678), 446 states have call predecessors, (1678), 461 states have return successors, (2198), 1674 states have call predecessors, (2198), 1668 states have call successors, (2198) [2025-03-16 18:37:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9339 states to 9339 states and 15473 transitions. [2025-03-16 18:37:06,639 INFO L78 Accepts]: Start accepts. Automaton has 9339 states and 15473 transitions. Word has length 123 [2025-03-16 18:37:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:06,639 INFO L471 AbstractCegarLoop]: Abstraction has 9339 states and 15473 transitions. [2025-03-16 18:37:06,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-03-16 18:37:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 9339 states and 15473 transitions. [2025-03-16 18:37:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-03-16 18:37:06,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:06,644 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:06,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 18:37:06,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 18:37:06,845 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:06,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash -150561087, now seen corresponding path program 1 times [2025-03-16 18:37:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640774320] [2025-03-16 18:37:06,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:06,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 123 statements into 1 equivalence classes. [2025-03-16 18:37:06,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 123 of 123 statements. [2025-03-16 18:37:06,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:06,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-16 18:37:06,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:06,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640774320] [2025-03-16 18:37:06,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640774320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:06,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:06,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:06,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590701544] [2025-03-16 18:37:06,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:06,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:06,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:06,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:06,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:06,927 INFO L87 Difference]: Start difference. First operand 9339 states and 15473 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:37:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:07,336 INFO L93 Difference]: Finished difference Result 18712 states and 31345 transitions. [2025-03-16 18:37:07,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:37:07,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 123 [2025-03-16 18:37:07,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:07,383 INFO L225 Difference]: With dead ends: 18712 [2025-03-16 18:37:07,383 INFO L226 Difference]: Without dead ends: 9387 [2025-03-16 18:37:07,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:37:07,436 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 12 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:07,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2606 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:07,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9387 states. [2025-03-16 18:37:07,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9387 to 9355. [2025-03-16 18:37:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9355 states, 7211 states have (on average 1.6093468312300652) internal successors, (11605), 7486 states have internal predecessors, (11605), 1678 states have call successors, (1678), 454 states have call predecessors, (1678), 465 states have return successors, (2172), 1670 states have call predecessors, (2172), 1668 states have call successors, (2172) [2025-03-16 18:37:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9355 states to 9355 states and 15455 transitions. [2025-03-16 18:37:07,797 INFO L78 Accepts]: Start accepts. Automaton has 9355 states and 15455 transitions. Word has length 123 [2025-03-16 18:37:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:07,799 INFO L471 AbstractCegarLoop]: Abstraction has 9355 states and 15455 transitions. [2025-03-16 18:37:07,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-16 18:37:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 9355 states and 15455 transitions. [2025-03-16 18:37:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-16 18:37:07,804 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:07,804 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:07,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 18:37:07,805 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:07,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1400337388, now seen corresponding path program 1 times [2025-03-16 18:37:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961117954] [2025-03-16 18:37:07,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:07,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-16 18:37:07,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-16 18:37:07,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:07,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 18:37:07,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:07,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961117954] [2025-03-16 18:37:07,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961117954] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:07,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:07,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425444193] [2025-03-16 18:37:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:07,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:07,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:07,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:07,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:07,967 INFO L87 Difference]: Start difference. First operand 9355 states and 15455 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-16 18:37:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:09,035 INFO L93 Difference]: Finished difference Result 28019 states and 47539 transitions. [2025-03-16 18:37:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:09,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 131 [2025-03-16 18:37:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:09,169 INFO L225 Difference]: With dead ends: 28019 [2025-03-16 18:37:09,170 INFO L226 Difference]: Without dead ends: 18678 [2025-03-16 18:37:09,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:09,229 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 883 mSDsluCounter, 3507 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 4471 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:09,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 4471 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:37:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18678 states. [2025-03-16 18:37:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18678 to 18577. [2025-03-16 18:37:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18577 states, 14332 states have (on average 1.6057772816075915) internal successors, (23014), 14873 states have internal predecessors, (23014), 3311 states have call successors, (3311), 902 states have call predecessors, (3311), 933 states have return successors, (5013), 3313 states have call predecessors, (5013), 3293 states have call successors, (5013) [2025-03-16 18:37:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18577 states to 18577 states and 31338 transitions. [2025-03-16 18:37:10,116 INFO L78 Accepts]: Start accepts. Automaton has 18577 states and 31338 transitions. Word has length 131 [2025-03-16 18:37:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:10,116 INFO L471 AbstractCegarLoop]: Abstraction has 18577 states and 31338 transitions. [2025-03-16 18:37:10,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-16 18:37:10,117 INFO L276 IsEmpty]: Start isEmpty. Operand 18577 states and 31338 transitions. [2025-03-16 18:37:10,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-16 18:37:10,121 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:10,121 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:10,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 18:37:10,121 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:10,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1588907934, now seen corresponding path program 1 times [2025-03-16 18:37:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185848007] [2025-03-16 18:37:10,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:10,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:10,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-16 18:37:10,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-16 18:37:10,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:10,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 18:37:10,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:10,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185848007] [2025-03-16 18:37:10,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185848007] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:10,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:10,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:10,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763068005] [2025-03-16 18:37:10,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:10,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:10,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:10,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:10,201 INFO L87 Difference]: Start difference. First operand 18577 states and 31338 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 18:37:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:11,094 INFO L93 Difference]: Finished difference Result 37284 states and 63903 transitions. [2025-03-16 18:37:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:37:11,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 132 [2025-03-16 18:37:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:11,234 INFO L225 Difference]: With dead ends: 37284 [2025-03-16 18:37:11,235 INFO L226 Difference]: Without dead ends: 18721 [2025-03-16 18:37:11,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:37:11,365 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 12 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:11,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2600 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18721 states. [2025-03-16 18:37:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18721 to 18657. [2025-03-16 18:37:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18657 states, 14404 states have (on average 1.6033046376006665) internal successors, (23094), 14929 states have internal predecessors, (23094), 3311 states have call successors, (3311), 934 states have call predecessors, (3311), 941 states have return successors, (4973), 3305 states have call predecessors, (4973), 3293 states have call successors, (4973) [2025-03-16 18:37:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18657 states to 18657 states and 31378 transitions. [2025-03-16 18:37:12,100 INFO L78 Accepts]: Start accepts. Automaton has 18657 states and 31378 transitions. Word has length 132 [2025-03-16 18:37:12,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:12,100 INFO L471 AbstractCegarLoop]: Abstraction has 18657 states and 31378 transitions. [2025-03-16 18:37:12,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-16 18:37:12,101 INFO L276 IsEmpty]: Start isEmpty. Operand 18657 states and 31378 transitions. [2025-03-16 18:37:12,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-16 18:37:12,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:12,106 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:12,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 18:37:12,107 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:12,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash -451517202, now seen corresponding path program 1 times [2025-03-16 18:37:12,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:12,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25133583] [2025-03-16 18:37:12,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:12,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:12,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-16 18:37:12,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-16 18:37:12,129 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:12,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:12,237 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-16 18:37:12,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:12,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25133583] [2025-03-16 18:37:12,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25133583] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:12,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:12,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:12,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036191079] [2025-03-16 18:37:12,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:12,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:12,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:12,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:12,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:12,241 INFO L87 Difference]: Start difference. First operand 18657 states and 31378 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:37:14,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:14,127 INFO L93 Difference]: Finished difference Result 56065 states and 97977 transitions. [2025-03-16 18:37:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:14,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 141 [2025-03-16 18:37:14,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:14,459 INFO L225 Difference]: With dead ends: 56065 [2025-03-16 18:37:14,459 INFO L226 Difference]: Without dead ends: 37422 [2025-03-16 18:37:14,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:14,638 INFO L435 NwaCegarLoop]: 954 mSDtfsCounter, 877 mSDsluCounter, 3483 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 4437 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:14,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 4437 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-16 18:37:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37422 states. [2025-03-16 18:37:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37422 to 37257. [2025-03-16 18:37:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37257 states, 28775 states have (on average 1.5998262380538661) internal successors, (46035), 29816 states have internal predecessors, (46035), 6588 states have call successors, (6588), 1862 states have call predecessors, (6588), 1893 states have return successors, (11990), 6602 states have call predecessors, (11990), 6554 states have call successors, (11990) [2025-03-16 18:37:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37257 states to 37257 states and 64613 transitions. [2025-03-16 18:37:16,694 INFO L78 Accepts]: Start accepts. Automaton has 37257 states and 64613 transitions. Word has length 141 [2025-03-16 18:37:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:16,695 INFO L471 AbstractCegarLoop]: Abstraction has 37257 states and 64613 transitions. [2025-03-16 18:37:16,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-16 18:37:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 37257 states and 64613 transitions. [2025-03-16 18:37:16,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-16 18:37:16,700 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:16,700 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:16,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 18:37:16,701 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:16,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash -554192373, now seen corresponding path program 1 times [2025-03-16 18:37:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:16,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835853739] [2025-03-16 18:37:16,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:16,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-16 18:37:16,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-16 18:37:16,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:16,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 18:37:16,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:16,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835853739] [2025-03-16 18:37:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835853739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:16,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:16,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869792817] [2025-03-16 18:37:16,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:16,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:16,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:16,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:16,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:16,777 INFO L87 Difference]: Start difference. First operand 37257 states and 64613 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 18:37:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:18,937 INFO L93 Difference]: Finished difference Result 74788 states and 133029 transitions. [2025-03-16 18:37:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:37:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 142 [2025-03-16 18:37:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:19,226 INFO L225 Difference]: With dead ends: 74788 [2025-03-16 18:37:19,226 INFO L226 Difference]: Without dead ends: 37545 [2025-03-16 18:37:19,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:37:19,581 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 11 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:19,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2600 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:19,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37545 states. [2025-03-16 18:37:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37545 to 37417. [2025-03-16 18:37:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37417 states, 28919 states have (on average 1.5973927175905114) internal successors, (46195), 29960 states have internal predecessors, (46195), 6588 states have call successors, (6588), 1894 states have call predecessors, (6588), 1909 states have return successors, (11934), 6586 states have call predecessors, (11934), 6554 states have call successors, (11934) [2025-03-16 18:37:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37417 states to 37417 states and 64717 transitions. [2025-03-16 18:37:21,518 INFO L78 Accepts]: Start accepts. Automaton has 37417 states and 64717 transitions. Word has length 142 [2025-03-16 18:37:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:21,518 INFO L471 AbstractCegarLoop]: Abstraction has 37417 states and 64717 transitions. [2025-03-16 18:37:21,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 18:37:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 37417 states and 64717 transitions. [2025-03-16 18:37:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-16 18:37:21,524 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:21,525 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:21,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:37:21,525 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:21,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2026430799, now seen corresponding path program 1 times [2025-03-16 18:37:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:21,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129264807] [2025-03-16 18:37:21,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:21,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:21,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-16 18:37:21,555 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-16 18:37:21,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:21,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-16 18:37:21,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:21,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129264807] [2025-03-16 18:37:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129264807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:21,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:21,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:21,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018771812] [2025-03-16 18:37:21,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:21,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:21,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:21,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:21,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:21,691 INFO L87 Difference]: Start difference. First operand 37417 states and 64717 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-16 18:37:25,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:25,850 INFO L93 Difference]: Finished difference Result 112581 states and 206687 transitions. [2025-03-16 18:37:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:25,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 152 [2025-03-16 18:37:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:26,806 INFO L225 Difference]: With dead ends: 112581 [2025-03-16 18:37:26,807 INFO L226 Difference]: Without dead ends: 75178 [2025-03-16 18:37:27,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:27,215 INFO L435 NwaCegarLoop]: 945 mSDtfsCounter, 874 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:27,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 4412 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:37:27,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75178 states. [2025-03-16 18:37:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75178 to 74885. [2025-03-16 18:37:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74885 states, 57886 states have (on average 1.59478975918184) internal successors, (92316), 59959 states have internal predecessors, (92316), 13153 states have call successors, (13153), 3782 states have call predecessors, (13153), 3845 states have return successors, (30535), 13191 states have call predecessors, (30535), 13087 states have call successors, (30535) [2025-03-16 18:37:31,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74885 states to 74885 states and 136004 transitions. [2025-03-16 18:37:31,307 INFO L78 Accepts]: Start accepts. Automaton has 74885 states and 136004 transitions. Word has length 152 [2025-03-16 18:37:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:31,308 INFO L471 AbstractCegarLoop]: Abstraction has 74885 states and 136004 transitions. [2025-03-16 18:37:31,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-16 18:37:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 74885 states and 136004 transitions. [2025-03-16 18:37:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-16 18:37:31,313 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:31,313 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:31,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 18:37:31,313 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:31,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:31,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1755996625, now seen corresponding path program 1 times [2025-03-16 18:37:31,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:31,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479893034] [2025-03-16 18:37:31,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:31,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-16 18:37:31,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-16 18:37:31,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:31,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-16 18:37:31,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:31,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479893034] [2025-03-16 18:37:31,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479893034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:31,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:31,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:31,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724332671] [2025-03-16 18:37:31,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:31,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:31,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:31,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:31,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:31,383 INFO L87 Difference]: Start difference. First operand 74885 states and 136004 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:37:36,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:36,621 INFO L93 Difference]: Finished difference Result 150396 states and 284699 transitions. [2025-03-16 18:37:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:37:36,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2025-03-16 18:37:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:37,457 INFO L225 Difference]: With dead ends: 150396 [2025-03-16 18:37:37,457 INFO L226 Difference]: Without dead ends: 75525 [2025-03-16 18:37:38,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:37:38,445 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 10 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:38,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2600 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:38,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75525 states. [2025-03-16 18:37:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75525 to 75269. [2025-03-16 18:37:41,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75269 states, 58238 states have (on average 1.591744221985645) internal successors, (92700), 60311 states have internal predecessors, (92700), 13153 states have call successors, (13153), 3846 states have call predecessors, (13153), 3877 states have return successors, (30471), 13159 states have call predecessors, (30471), 13087 states have call successors, (30471) [2025-03-16 18:37:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75269 states to 75269 states and 136324 transitions. [2025-03-16 18:37:42,217 INFO L78 Accepts]: Start accepts. Automaton has 75269 states and 136324 transitions. Word has length 153 [2025-03-16 18:37:42,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:42,217 INFO L471 AbstractCegarLoop]: Abstraction has 75269 states and 136324 transitions. [2025-03-16 18:37:42,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-16 18:37:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 75269 states and 136324 transitions. [2025-03-16 18:37:42,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-16 18:37:42,223 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:42,223 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:42,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 18:37:42,224 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:42,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:42,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2010200775, now seen corresponding path program 1 times [2025-03-16 18:37:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:42,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211619142] [2025-03-16 18:37:42,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:42,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:42,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-16 18:37:42,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-16 18:37:42,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:42,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-16 18:37:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:42,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211619142] [2025-03-16 18:37:42,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211619142] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:37:42,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759457287] [2025-03-16 18:37:42,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:42,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:42,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:37:42,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:37:42,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 18:37:42,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-16 18:37:42,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-16 18:37:42,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:42,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:42,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-16 18:37:42,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:37:42,726 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-16 18:37:42,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:37:42,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759457287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:42,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:37:42,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-16 18:37:42,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983599873] [2025-03-16 18:37:42,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:42,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:42,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:42,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:42,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:37:42,728 INFO L87 Difference]: Start difference. First operand 75269 states and 136324 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20)