./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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-?-c00e63d-m [2025-02-05 15:38:03,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:38:03,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:38:03,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:38:03,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:38:03,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:38:03,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:38:03,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:38:03,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:38:03,588 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:38:03,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:38:03,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:38:03,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:38:03,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:38:03,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:38:03,589 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:38:03,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:38:03,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:38:03,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:38:03,590 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-jdk21/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 [2025-02-05 15:38:03,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:38:03,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:38:03,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:38:03,834 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:38:03,834 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:38:03,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2025-02-05 15:38:04,968 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5f470ef2/f0c3c2a35ecf421a803551eff7b7acdd/FLAGe5cb709db [2025-02-05 15:38:05,319 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:38:05,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2025-02-05 15:38:05,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5f470ef2/f0c3c2a35ecf421a803551eff7b7acdd/FLAGe5cb709db [2025-02-05 15:38:05,542 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f5f470ef2/f0c3c2a35ecf421a803551eff7b7acdd [2025-02-05 15:38:05,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:38:05,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:38:05,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:38:05,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:38:05,550 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:38:05,551 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:38:05" (1/1) ... [2025-02-05 15:38:05,552 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614da7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:05, skipping insertion in model container [2025-02-05 15:38:05,553 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:38:05" (1/1) ... [2025-02-05 15:38:05,595 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:38:05,993 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2025-02-05 15:38:05,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:38:06,008 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:38:06,015 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2025-02-05 15:38:06,016 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1613] [2025-02-05 15:38:06,016 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1707] [2025-02-05 15:38:06,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1825] [2025-02-05 15:38:06,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2012] [2025-02-05 15:38:06,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2030] [2025-02-05 15:38:06,017 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2381] [2025-02-05 15:38:06,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3042] [2025-02-05 15:38:06,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3077] [2025-02-05 15:38:06,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3443] [2025-02-05 15:38:06,109 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2025-02-05 15:38:06,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:38:06,131 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:38:06,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06 WrapperNode [2025-02-05 15:38:06,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:38:06,134 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:38:06,134 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:38:06,134 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:38:06,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,195 INFO L138 Inliner]: procedures = 93, calls = 348, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1131 [2025-02-05 15:38:06,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:38:06,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:38:06,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:38:06,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:38:06,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,244 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]. [2025-02-05 15:38:06,245 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,264 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,286 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:38:06,287 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:38:06,288 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:38:06,288 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:38:06,288 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (1/1) ... [2025-02-05 15:38:06,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:38:06,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:06,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 15:38:06,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 15:38:06,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:38:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-02-05 15:38:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-02-05 15:38:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-02-05 15:38:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-02-05 15:38:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-02-05 15:38:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-02-05 15:38:06,336 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-02-05 15:38:06,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-02-05 15:38:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-02-05 15:38:06,337 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-02-05 15:38:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-02-05 15:38:06,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-02-05 15:38:06,337 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-02-05 15:38:06,338 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-02-05 15:38:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-02-05 15:38:06,338 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-02-05 15:38:06,338 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-02-05 15:38:06,338 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-02-05 15:38:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-02-05 15:38:06,339 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-02-05 15:38:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-02-05 15:38:06,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-02-05 15:38:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-02-05 15:38:06,339 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-02-05 15:38:06,339 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-02-05 15:38:06,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-02-05 15:38:06,340 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-02-05 15:38:06,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-02-05 15:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-02-05 15:38:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-02-05 15:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-02-05 15:38:06,341 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-02-05 15:38:06,341 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-02-05 15:38:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-02-05 15:38:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-02-05 15:38:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-02-05 15:38:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-02-05 15:38:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-02-05 15:38:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-02-05 15:38:06,342 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-02-05 15:38:06,342 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-02-05 15:38:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-02-05 15:38:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-02-05 15:38:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-02-05 15:38:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-02-05 15:38:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-02-05 15:38:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:38:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:38:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-02-05 15:38:06,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-02-05 15:38:06,495 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:38:06,496 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:38:06,525 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L366: #res := ~retValue_acc~4; [2025-02-05 15:38:06,545 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1744: #res := ~retValue_acc~17; [2025-02-05 15:38:06,575 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1601: #res := ~retValue_acc~15; [2025-02-05 15:38:06,832 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L880: #res#1 := ~retValue_acc~9#1; [2025-02-05 15:38:06,832 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L851-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~8#1; [2025-02-05 15:38:06,845 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1015: #res := ~retValue_acc~13; [2025-02-05 15:38:06,917 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L486-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~6#1; [2025-02-05 15:38:06,917 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L499-1: isIdle_#res#1 := isIdle_~retValue_acc~7#1; [2025-02-05 15:38:07,088 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1001-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~12#1; [2025-02-05 15:38:07,094 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3039: #res := ~retValue_acc~24; [2025-02-05 15:38:07,105 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1822: #res := ~retValue_acc~19; [2025-02-05 15:38:07,107 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L141: #res := ~retValue_acc~0; [2025-02-05 15:38:07,109 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L314: #res := ~retValue_acc~1; [2025-02-05 15:38:07,135 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L970: #res := ~retValue_acc~11; [2025-02-05 15:38:07,267 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L1783: #res := ~retValue_acc~18; [2025-02-05 15:38:07,288 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L357: #res := ~retValue_acc~3; [2025-02-05 15:38:07,343 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L406-1: isEmpty_#res#1 := isEmpty_~retValue_acc~5#1; [2025-02-05 15:38:07,393 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2728: #res := ~retValue_acc~23; [2025-02-05 15:38:07,442 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L3074-1: valid_product_#res#1 := valid_product_~retValue_acc~26#1; [2025-02-05 15:38:07,442 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2378-1: main_#res#1 := main_~retValue_acc~21#1; [2025-02-05 15:38:07,454 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2492: #res := ~retValue_acc~22; [2025-02-05 15:38:07,622 INFO L? ?]: Removed 469 outVars from TransFormulas that were not future-live. [2025-02-05 15:38:07,622 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:38:07,645 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:38:07,649 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:38:07,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:38:07 BoogieIcfgContainer [2025-02-05 15:38:07,649 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:38:07,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:38:07,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:38:07,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:38:07,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:38:05" (1/3) ... [2025-02-05 15:38:07,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65227142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:38:07, skipping insertion in model container [2025-02-05 15:38:07,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:38:06" (2/3) ... [2025-02-05 15:38:07,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65227142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:38:07, skipping insertion in model container [2025-02-05 15:38:07,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:38:07" (3/3) ... [2025-02-05 15:38:07,657 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2025-02-05 15:38:07,669 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:38:07,672 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product27.cil.c that has 28 procedures, 598 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:38:07,731 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:38:07,740 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;@1621e8c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:38:07,741 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:38:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 598 states, 460 states have (on average 1.6695652173913043) internal successors, (768), 479 states have internal predecessors, (768), 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) [2025-02-05 15:38:07,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 15:38:07,763 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:07,764 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] [2025-02-05 15:38:07,765 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:07,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:07,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2036171371, now seen corresponding path program 1 times [2025-02-05 15:38:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174877661] [2025-02-05 15:38:07,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:07,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:07,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 15:38:07,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 15:38:07,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:07,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:08,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:08,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174877661] [2025-02-05 15:38:08,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174877661] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:08,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:08,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:08,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387699601] [2025-02-05 15:38:08,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:08,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:08,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:08,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:08,493 INFO L87 Difference]: Start difference. First operand has 598 states, 460 states have (on average 1.6695652173913043) internal successors, (768), 479 states have internal predecessors, (768), 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 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-02-05 15:38:08,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:08,705 INFO L93 Difference]: Finished difference Result 1193 states and 1980 transitions. [2025-02-05 15:38:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:08,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 113 [2025-02-05 15:38:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:08,723 INFO L225 Difference]: With dead ends: 1193 [2025-02-05 15:38:08,723 INFO L226 Difference]: Without dead ends: 602 [2025-02-05 15:38:08,730 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 [2025-02-05 15:38:08,732 INFO L435 NwaCegarLoop]: 970 mSDtfsCounter, 91 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5734 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 [2025-02-05 15:38:08,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5734 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:38:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2025-02-05 15:38:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2025-02-05 15:38:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 463 states have (on average 1.6630669546436285) internal successors, (770), 481 states have internal predecessors, (770), 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) [2025-02-05 15:38:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 987 transitions. [2025-02-05 15:38:08,817 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 987 transitions. Word has length 113 [2025-02-05 15:38:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:08,818 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 987 transitions. [2025-02-05 15:38:08,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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) [2025-02-05 15:38:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 987 transitions. [2025-02-05 15:38:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 15:38:08,824 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:08,825 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] [2025-02-05 15:38:08,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:38:08,825 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:08,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:08,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1314504120, now seen corresponding path program 1 times [2025-02-05 15:38:08,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:08,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046829870] [2025-02-05 15:38:08,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:08,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:08,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:38:08,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:38:08,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:08,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:09,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:09,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046829870] [2025-02-05 15:38:09,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046829870] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:09,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:09,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989153846] [2025-02-05 15:38:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:09,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:09,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:09,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:09,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:09,021 INFO L87 Difference]: Start difference. First operand 600 states and 987 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), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:38:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:09,098 INFO L93 Difference]: Finished difference Result 1182 states and 1955 transitions. [2025-02-05 15:38:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:09,099 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), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2025-02-05 15:38:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:09,106 INFO L225 Difference]: With dead ends: 1182 [2025-02-05 15:38:09,106 INFO L226 Difference]: Without dead ends: 576 [2025-02-05 15:38:09,110 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 [2025-02-05 15:38:09,110 INFO L435 NwaCegarLoop]: 957 mSDtfsCounter, 14 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2866 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 [2025-02-05 15:38:09,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2866 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-02-05 15:38:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-02-05 15:38:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 442 states have (on average 1.6538461538461537) internal successors, (731), 458 states have internal predecessors, (731), 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) [2025-02-05 15:38:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 944 transitions. [2025-02-05 15:38:09,148 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 944 transitions. Word has length 114 [2025-02-05 15:38:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:09,149 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 944 transitions. [2025-02-05 15:38:09,149 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), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-02-05 15:38:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 944 transitions. [2025-02-05 15:38:09,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-05 15:38:09,153 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:09,153 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] [2025-02-05 15:38:09,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:38:09,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:09,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:09,154 INFO L85 PathProgramCache]: Analyzing trace with hash 974433635, now seen corresponding path program 1 times [2025-02-05 15:38:09,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:09,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917832814] [2025-02-05 15:38:09,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:09,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:09,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-05 15:38:09,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-05 15:38:09,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:09,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:09,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:09,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917832814] [2025-02-05 15:38:09,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917832814] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:09,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:09,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:09,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889777980] [2025-02-05 15:38:09,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:09,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:09,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:09,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:09,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:09,425 INFO L87 Difference]: Start difference. First operand 576 states and 944 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2025-02-05 15:38:09,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:09,523 INFO L93 Difference]: Finished difference Result 1145 states and 1887 transitions. [2025-02-05 15:38:09,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:09,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 114 [2025-02-05 15:38:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:09,527 INFO L225 Difference]: With dead ends: 1145 [2025-02-05 15:38:09,528 INFO L226 Difference]: Without dead ends: 570 [2025-02-05 15:38:09,530 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 [2025-02-05 15:38:09,531 INFO L435 NwaCegarLoop]: 933 mSDtfsCounter, 77 mSDsluCounter, 4595 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5528 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 [2025-02-05 15:38:09,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5528 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-02-05 15:38:09,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-02-05 15:38:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 436 states have (on average 1.646788990825688) internal successors, (718), 452 states have internal predecessors, (718), 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) [2025-02-05 15:38:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 931 transitions. [2025-02-05 15:38:09,562 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 931 transitions. Word has length 114 [2025-02-05 15:38:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:09,562 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 931 transitions. [2025-02-05 15:38:09,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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) [2025-02-05 15:38:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 931 transitions. [2025-02-05 15:38:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-02-05 15:38:09,566 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:09,566 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] [2025-02-05 15:38:09,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 15:38:09,568 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:09,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1035860433, now seen corresponding path program 1 times [2025-02-05 15:38:09,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:09,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810383833] [2025-02-05 15:38:09,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:09,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:09,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-02-05 15:38:09,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-02-05 15:38:09,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:09,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:09,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:09,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:09,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810383833] [2025-02-05 15:38:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810383833] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:09,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:09,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:09,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607103656] [2025-02-05 15:38:09,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:09,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:09,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:09,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:09,787 INFO L87 Difference]: Start difference. First operand 570 states and 931 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (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) [2025-02-05 15:38:09,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:09,856 INFO L93 Difference]: Finished difference Result 1133 states and 1861 transitions. [2025-02-05 15:38:09,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:09,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (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 115 [2025-02-05 15:38:09,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:09,862 INFO L225 Difference]: With dead ends: 1133 [2025-02-05 15:38:09,862 INFO L226 Difference]: Without dead ends: 564 [2025-02-05 15:38:09,865 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 [2025-02-05 15:38:09,865 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 63 mSDsluCounter, 4547 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5468 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 [2025-02-05 15:38:09,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5468 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:09,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-02-05 15:38:09,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2025-02-05 15:38:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 446 states have internal predecessors, (705), 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) [2025-02-05 15:38:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 918 transitions. [2025-02-05 15:38:09,883 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 918 transitions. Word has length 115 [2025-02-05 15:38:09,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:09,883 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 918 transitions. [2025-02-05 15:38:09,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (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) [2025-02-05 15:38:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 918 transitions. [2025-02-05 15:38:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 15:38:09,903 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:09,903 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] [2025-02-05 15:38:09,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 15:38:09,903 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:09,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:09,904 INFO L85 PathProgramCache]: Analyzing trace with hash 983899125, now seen corresponding path program 1 times [2025-02-05 15:38:09,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:09,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385117056] [2025-02-05 15:38:09,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:09,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:09,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 15:38:09,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 15:38:09,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:09,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:10,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385117056] [2025-02-05 15:38:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385117056] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:10,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 15:38:10,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863370146] [2025-02-05 15:38:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:10,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 15:38:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:10,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 15:38:10,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:38:10,054 INFO L87 Difference]: Start difference. First operand 564 states and 918 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (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) [2025-02-05 15:38:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:10,132 INFO L93 Difference]: Finished difference Result 1121 states and 1835 transitions. [2025-02-05 15:38:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 15:38:10,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (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 116 [2025-02-05 15:38:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:10,138 INFO L225 Difference]: With dead ends: 1121 [2025-02-05 15:38:10,138 INFO L226 Difference]: Without dead ends: 558 [2025-02-05 15:38:10,141 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 [2025-02-05 15:38:10,142 INFO L435 NwaCegarLoop]: 909 mSDtfsCounter, 49 mSDsluCounter, 4499 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5408 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:10,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5408 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:10,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-02-05 15:38:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-02-05 15:38:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6297169811320755) internal successors, (691), 440 states have internal predecessors, (691), 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) [2025-02-05 15:38:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2025-02-05 15:38:10,194 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 116 [2025-02-05 15:38:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:10,195 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2025-02-05 15:38:10,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (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) [2025-02-05 15:38:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2025-02-05 15:38:10,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-05 15:38:10,198 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:10,198 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] [2025-02-05 15:38:10,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 15:38:10,198 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:10,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:10,199 INFO L85 PathProgramCache]: Analyzing trace with hash -360347959, now seen corresponding path program 1 times [2025-02-05 15:38:10,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:10,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849781060] [2025-02-05 15:38:10,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:10,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-05 15:38:10,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-05 15:38:10,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:10,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849781060] [2025-02-05 15:38:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849781060] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:10,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:10,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:10,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921574440] [2025-02-05 15:38:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:10,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:10,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:10,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:10,319 INFO L87 Difference]: Start difference. First operand 558 states and 904 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, (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) [2025-02-05 15:38:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:10,365 INFO L93 Difference]: Finished difference Result 1100 states and 1794 transitions. [2025-02-05 15:38:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:10,366 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, (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 117 [2025-02-05 15:38:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:10,369 INFO L225 Difference]: With dead ends: 1100 [2025-02-05 15:38:10,370 INFO L226 Difference]: Without dead ends: 558 [2025-02-05 15:38:10,372 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 [2025-02-05 15:38:10,372 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 15 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2652 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 [2025-02-05 15:38:10,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2652 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:10,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-02-05 15:38:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-02-05 15:38:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6273584905660377) internal successors, (690), 440 states have internal predecessors, (690), 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) [2025-02-05 15:38:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 903 transitions. [2025-02-05 15:38:10,390 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 903 transitions. Word has length 117 [2025-02-05 15:38:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:10,390 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 903 transitions. [2025-02-05 15:38:10,391 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, (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) [2025-02-05 15:38:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 903 transitions. [2025-02-05 15:38:10,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-05 15:38:10,393 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:10,393 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] [2025-02-05 15:38:10,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 15:38:10,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:10,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:10,393 INFO L85 PathProgramCache]: Analyzing trace with hash -478254395, now seen corresponding path program 1 times [2025-02-05 15:38:10,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372715868] [2025-02-05 15:38:10,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:10,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:10,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-05 15:38:10,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-05 15:38:10,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:10,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:10,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:10,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372715868] [2025-02-05 15:38:10,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372715868] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:10,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:10,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:10,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953822562] [2025-02-05 15:38:10,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:10,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:10,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:10,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:10,508 INFO L87 Difference]: Start difference. First operand 558 states and 903 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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) [2025-02-05 15:38:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:10,547 INFO L93 Difference]: Finished difference Result 1100 states and 1792 transitions. [2025-02-05 15:38:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:10,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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 118 [2025-02-05 15:38:10,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:10,551 INFO L225 Difference]: With dead ends: 1100 [2025-02-05 15:38:10,551 INFO L226 Difference]: Without dead ends: 558 [2025-02-05 15:38:10,553 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 [2025-02-05 15:38:10,554 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 14 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2654 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 [2025-02-05 15:38:10,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2654 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-02-05 15:38:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-02-05 15:38:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.625) internal successors, (689), 440 states have internal predecessors, (689), 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) [2025-02-05 15:38:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 902 transitions. [2025-02-05 15:38:10,571 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 902 transitions. Word has length 118 [2025-02-05 15:38:10,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:10,571 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 902 transitions. [2025-02-05 15:38:10,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (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) [2025-02-05 15:38:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 902 transitions. [2025-02-05 15:38:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-05 15:38:10,574 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:10,574 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] [2025-02-05 15:38:10,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 15:38:10,574 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:10,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:10,575 INFO L85 PathProgramCache]: Analyzing trace with hash 910945932, now seen corresponding path program 1 times [2025-02-05 15:38:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:10,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5187584] [2025-02-05 15:38:10,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:10,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-05 15:38:10,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 15:38:10,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:10,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:10,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:10,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5187584] [2025-02-05 15:38:10,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5187584] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:10,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:10,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:10,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929993566] [2025-02-05 15:38:10,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:10,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:10,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:10,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:10,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:10,670 INFO L87 Difference]: Start difference. First operand 558 states and 902 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (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) [2025-02-05 15:38:10,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:10,707 INFO L93 Difference]: Finished difference Result 1100 states and 1790 transitions. [2025-02-05 15:38:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:10,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (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 119 [2025-02-05 15:38:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:10,711 INFO L225 Difference]: With dead ends: 1100 [2025-02-05 15:38:10,711 INFO L226 Difference]: Without dead ends: 558 [2025-02-05 15:38:10,714 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 [2025-02-05 15:38:10,714 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 13 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2656 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 [2025-02-05 15:38:10,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2656 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:10,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-02-05 15:38:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-02-05 15:38:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6226415094339623) internal successors, (688), 440 states have internal predecessors, (688), 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) [2025-02-05 15:38:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 901 transitions. [2025-02-05 15:38:10,732 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 901 transitions. Word has length 119 [2025-02-05 15:38:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:10,732 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 901 transitions. [2025-02-05 15:38:10,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (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) [2025-02-05 15:38:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 901 transitions. [2025-02-05 15:38:10,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-05 15:38:10,735 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:10,735 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] [2025-02-05 15:38:10,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 15:38:10,735 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:10,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:10,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1775815656, now seen corresponding path program 1 times [2025-02-05 15:38:10,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:10,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054810979] [2025-02-05 15:38:10,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:10,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-02-05 15:38:10,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-02-05 15:38:10,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:10,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:10,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:10,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:10,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054810979] [2025-02-05 15:38:10,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054810979] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:10,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312530942] [2025-02-05 15:38:10,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:10,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:10,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:10,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:10,838 INFO L87 Difference]: Start difference. First operand 558 states and 901 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-02-05 15:38:10,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:10,872 INFO L93 Difference]: Finished difference Result 1100 states and 1788 transitions. [2025-02-05 15:38:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 15:38:10,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 120 [2025-02-05 15:38:10,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:10,876 INFO L225 Difference]: With dead ends: 1100 [2025-02-05 15:38:10,876 INFO L226 Difference]: Without dead ends: 558 [2025-02-05 15:38:10,878 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 [2025-02-05 15:38:10,878 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 12 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2658 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 [2025-02-05 15:38:10,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2658 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-02-05 15:38:10,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-02-05 15:38:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 424 states have (on average 1.6202830188679245) internal successors, (687), 440 states have internal predecessors, (687), 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) [2025-02-05 15:38:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 900 transitions. [2025-02-05 15:38:10,895 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 900 transitions. Word has length 120 [2025-02-05 15:38:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:10,895 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 900 transitions. [2025-02-05 15:38:10,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2025-02-05 15:38:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 900 transitions. [2025-02-05 15:38:10,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-05 15:38:10,897 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:10,897 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] [2025-02-05 15:38:10,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 15:38:10,898 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:10,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -728661425, now seen corresponding path program 1 times [2025-02-05 15:38:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:10,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665775930] [2025-02-05 15:38:10,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:10,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:10,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:38:10,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:38:10,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:10,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 15:38:11,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665775930] [2025-02-05 15:38:11,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665775930] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:11,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773480512] [2025-02-05 15:38:11,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:11,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:11,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:11,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:38:11,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 15:38:11,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 121 statements into 1 equivalence classes. [2025-02-05 15:38:11,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:38:11,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:11,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:11,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:38:11,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:38:11,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:11,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773480512] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:11,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-02-05 15:38:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875808032] [2025-02-05 15:38:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:11,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:38:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:11,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:38:11,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:11,505 INFO L87 Difference]: Start difference. First operand 558 states and 900 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2025-02-05 15:38:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:11,571 INFO L93 Difference]: Finished difference Result 1585 states and 2588 transitions. [2025-02-05 15:38:11,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:38:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 121 [2025-02-05 15:38:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:11,579 INFO L225 Difference]: With dead ends: 1585 [2025-02-05 15:38:11,580 INFO L226 Difference]: Without dead ends: 1045 [2025-02-05 15:38:11,583 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 [2025-02-05 15:38:11,583 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 823 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 2339 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 [2025-02-05 15:38:11,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 2339 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2025-02-05 15:38:11,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1030. [2025-02-05 15:38:11,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 790 states have (on average 1.6329113924050633) internal successors, (1290), 821 states have internal predecessors, (1290), 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) [2025-02-05 15:38:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1674 transitions. [2025-02-05 15:38:11,647 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1674 transitions. Word has length 121 [2025-02-05 15:38:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:11,648 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1674 transitions. [2025-02-05 15:38:11,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2025-02-05 15:38:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1674 transitions. [2025-02-05 15:38:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-05 15:38:11,651 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:11,651 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, 1] [2025-02-05 15:38:11,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 15:38:11,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-05 15:38:11,856 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:11,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:11,857 INFO L85 PathProgramCache]: Analyzing trace with hash -552510455, now seen corresponding path program 1 times [2025-02-05 15:38:11,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:11,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415327826] [2025-02-05 15:38:11,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:11,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:11,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:38:11,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:38:11,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:11,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 15:38:12,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415327826] [2025-02-05 15:38:12,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415327826] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:12,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118077174] [2025-02-05 15:38:12,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:12,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:12,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:12,099 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:38:12,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 15:38:12,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-02-05 15:38:12,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-02-05 15:38:12,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:12,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:12,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 15:38:12,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:38:12,498 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:12,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118077174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:12,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:12,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-02-05 15:38:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089857930] [2025-02-05 15:38:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:12,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:38:12,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:12,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:38:12,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:12,501 INFO L87 Difference]: Start difference. First operand 1030 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-02-05 15:38:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:12,606 INFO L93 Difference]: Finished difference Result 2529 states and 4138 transitions. [2025-02-05 15:38:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:38:12,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 122 [2025-02-05 15:38:12,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:12,618 INFO L225 Difference]: With dead ends: 2529 [2025-02-05 15:38:12,618 INFO L226 Difference]: Without dead ends: 1517 [2025-02-05 15:38:12,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:12,624 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 825 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1756 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 [2025-02-05 15:38:12,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1756 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2025-02-05 15:38:12,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1469. [2025-02-05 15:38:12,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1129 states have (on average 1.6448184233835252) internal successors, (1857), 1175 states have internal predecessors, (1857), 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) [2025-02-05 15:38:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 2406 transitions. [2025-02-05 15:38:12,686 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 2406 transitions. Word has length 122 [2025-02-05 15:38:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:12,687 INFO L471 AbstractCegarLoop]: Abstraction has 1469 states and 2406 transitions. [2025-02-05 15:38:12,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-02-05 15:38:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 2406 transitions. [2025-02-05 15:38:12,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-05 15:38:12,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:12,693 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, 1, 1, 1] [2025-02-05 15:38:12,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 15:38:12,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:12,897 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:12,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1904669776, now seen corresponding path program 1 times [2025-02-05 15:38:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061583672] [2025-02-05 15:38:12,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:12,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-02-05 15:38:12,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-02-05 15:38:12,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:12,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:13,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-05 15:38:13,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:13,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061583672] [2025-02-05 15:38:13,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061583672] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:13,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:13,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:13,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453826540] [2025-02-05 15:38:13,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:13,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:13,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:13,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:13,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:13,089 INFO L87 Difference]: Start difference. First operand 1469 states and 2406 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, (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) [2025-02-05 15:38:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:13,667 INFO L93 Difference]: Finished difference Result 4343 states and 7237 transitions. [2025-02-05 15:38:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:13,668 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, (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 124 [2025-02-05 15:38:13,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:13,685 INFO L225 Difference]: With dead ends: 4343 [2025-02-05 15:38:13,686 INFO L226 Difference]: Without dead ends: 2892 [2025-02-05 15:38:13,693 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 [2025-02-05 15:38:13,695 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 894 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 4621 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 [2025-02-05 15:38:13,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 4621 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:38:13,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2025-02-05 15:38:13,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2845. [2025-02-05 15:38:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2191 states have (on average 1.6481058877225012) internal successors, (3611), 2279 states have internal predecessors, (3611), 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) [2025-02-05 15:38:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4747 transitions. [2025-02-05 15:38:13,816 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4747 transitions. Word has length 124 [2025-02-05 15:38:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:13,816 INFO L471 AbstractCegarLoop]: Abstraction has 2845 states and 4747 transitions. [2025-02-05 15:38:13,817 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, (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) [2025-02-05 15:38:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4747 transitions. [2025-02-05 15:38:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-02-05 15:38:13,822 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:13,822 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, 1, 1, 1, 1] [2025-02-05 15:38:13,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-05 15:38:13,822 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:13,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2052828101, now seen corresponding path program 1 times [2025-02-05 15:38:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:13,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670998321] [2025-02-05 15:38:13,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:13,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:38:13,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:38:13,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:13,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 15:38:14,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:14,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670998321] [2025-02-05 15:38:14,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670998321] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:14,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965643380] [2025-02-05 15:38:14,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:14,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:14,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:38:14,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 15:38:14,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-02-05 15:38:14,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-02-05 15:38:14,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:14,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:14,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 15:38:14,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:14,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:38:14,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:14,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965643380] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:14,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:14,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-02-05 15:38:14,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382652918] [2025-02-05 15:38:14,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:14,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:38:14,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:14,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:38:14,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:14,436 INFO L87 Difference]: Start difference. First operand 2845 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-02-05 15:38:14,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:14,721 INFO L93 Difference]: Finished difference Result 8245 states and 13946 transitions. [2025-02-05 15:38:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:38:14,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 125 [2025-02-05 15:38:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:14,757 INFO L225 Difference]: With dead ends: 8245 [2025-02-05 15:38:14,758 INFO L226 Difference]: Without dead ends: 5419 [2025-02-05 15:38:14,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:38:14,779 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 735 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1726 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 [2025-02-05 15:38:14,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 1726 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:38:14,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5419 states. [2025-02-05 15:38:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5419 to 5382. [2025-02-05 15:38:15,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 4132 states have (on average 1.6166505324298162) internal successors, (6680), 4306 states have internal predecessors, (6680), 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) [2025-02-05 15:38:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 8945 transitions. [2025-02-05 15:38:15,093 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 8945 transitions. Word has length 125 [2025-02-05 15:38:15,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:15,094 INFO L471 AbstractCegarLoop]: Abstraction has 5382 states and 8945 transitions. [2025-02-05 15:38:15,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2025-02-05 15:38:15,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 8945 transitions. [2025-02-05 15:38:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:38:15,099 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:15,099 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, 1, 1, 1, 1] [2025-02-05 15:38:15,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 15:38:15,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:15,303 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:15,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:15,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1782717066, now seen corresponding path program 1 times [2025-02-05 15:38:15,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:15,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182633396] [2025-02-05 15:38:15,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:15,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:15,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:15,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:15,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:15,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:38:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182633396] [2025-02-05 15:38:15,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182633396] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:15,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010934464] [2025-02-05 15:38:15,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:15,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:15,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:15,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:38:15,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 15:38:15,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:15,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:15,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:15,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:15,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 15:38:15,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 15:38:15,813 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:15,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010934464] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:15,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:15,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 9 [2025-02-05 15:38:15,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360575574] [2025-02-05 15:38:15,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:15,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 15:38:15,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:15,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 15:38:15,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:38:15,814 INFO L87 Difference]: Start difference. First operand 5382 states and 8945 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2025-02-05 15:38:16,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:16,180 INFO L93 Difference]: Finished difference Result 16032 states and 26968 transitions. [2025-02-05 15:38:16,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 15:38:16,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 127 [2025-02-05 15:38:16,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:16,282 INFO L225 Difference]: With dead ends: 16032 [2025-02-05 15:38:16,282 INFO L226 Difference]: Without dead ends: 10671 [2025-02-05 15:38:16,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-05 15:38:16,306 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 885 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1775 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 [2025-02-05 15:38:16,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [885 Valid, 1775 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2025-02-05 15:38:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 10568. [2025-02-05 15:38:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10568 states, 8140 states have (on average 1.6200245700245701) internal successors, (13187), 8468 states have internal predecessors, (13187), 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) [2025-02-05 15:38:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10568 states to 10568 states and 17651 transitions. [2025-02-05 15:38:16,816 INFO L78 Accepts]: Start accepts. Automaton has 10568 states and 17651 transitions. Word has length 127 [2025-02-05 15:38:16,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:16,816 INFO L471 AbstractCegarLoop]: Abstraction has 10568 states and 17651 transitions. [2025-02-05 15:38:16,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2025-02-05 15:38:16,817 INFO L276 IsEmpty]: Start isEmpty. Operand 10568 states and 17651 transitions. [2025-02-05 15:38:16,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:38:16,822 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:16,822 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, 1, 1, 1, 1] [2025-02-05 15:38:16,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:38:17,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-05 15:38:17,026 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:17,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:17,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2006691605, now seen corresponding path program 1 times [2025-02-05 15:38:17,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:17,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423649441] [2025-02-05 15:38:17,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:17,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:17,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:17,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:17,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 15:38:17,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423649441] [2025-02-05 15:38:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423649441] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:38:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440185569] [2025-02-05 15:38:17,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:17,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:38:17,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:38:17,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:38:17,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 15:38:17,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:17,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:17,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:17,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:17,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:38:17,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:38:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:38:17,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:38:17,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440185569] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:17,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:38:17,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-02-05 15:38:17,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095192576] [2025-02-05 15:38:17,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:17,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:17,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:17,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:17,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:38:17,569 INFO L87 Difference]: Start difference. First operand 10568 states and 17651 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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) [2025-02-05 15:38:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:18,620 INFO L93 Difference]: Finished difference Result 19957 states and 33404 transitions. [2025-02-05 15:38:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:18,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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 127 [2025-02-05 15:38:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:18,700 INFO L225 Difference]: With dead ends: 19957 [2025-02-05 15:38:18,700 INFO L226 Difference]: Without dead ends: 9407 [2025-02-05 15:38:18,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:38:18,769 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 755 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 4152 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 [2025-02-05 15:38:18,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 4152 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 15:38:18,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9407 states. [2025-02-05 15:38:19,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9407 to 9385. [2025-02-05 15:38:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9385 states, 7245 states have (on average 1.60703933747412) internal successors, (11643), 7520 states have internal predecessors, (11643), 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) [2025-02-05 15:38:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9385 states to 9385 states and 15519 transitions. [2025-02-05 15:38:19,217 INFO L78 Accepts]: Start accepts. Automaton has 9385 states and 15519 transitions. Word has length 127 [2025-02-05 15:38:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:19,218 INFO L471 AbstractCegarLoop]: Abstraction has 9385 states and 15519 transitions. [2025-02-05 15:38:19,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 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) [2025-02-05 15:38:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9385 states and 15519 transitions. [2025-02-05 15:38:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-05 15:38:19,220 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:19,221 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, 1, 1, 1, 1] [2025-02-05 15:38:19,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 15:38:19,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-05 15:38:19,421 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:19,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:19,422 INFO L85 PathProgramCache]: Analyzing trace with hash -107660466, now seen corresponding path program 1 times [2025-02-05 15:38:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:19,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050555554] [2025-02-05 15:38:19,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:19,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-02-05 15:38:19,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-02-05 15:38:19,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:19,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:19,501 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 15:38:19,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:19,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050555554] [2025-02-05 15:38:19,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050555554] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:19,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:19,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:19,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170569305] [2025-02-05 15:38:19,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:19,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:19,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:19,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:19,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:19,503 INFO L87 Difference]: Start difference. First operand 9385 states and 15519 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (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) [2025-02-05 15:38:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:19,877 INFO L93 Difference]: Finished difference Result 18800 states and 31433 transitions. [2025-02-05 15:38:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:19,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (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 127 [2025-02-05 15:38:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:19,944 INFO L225 Difference]: With dead ends: 18800 [2025-02-05 15:38:19,944 INFO L226 Difference]: Without dead ends: 9433 [2025-02-05 15:38:19,993 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 [2025-02-05 15:38:19,994 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 12 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2624 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 [2025-02-05 15:38:19,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2624 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9433 states. [2025-02-05 15:38:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9433 to 9401. [2025-02-05 15:38:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9401 states, 7257 states have (on average 1.605484359928345) internal successors, (11651), 7532 states have internal predecessors, (11651), 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) [2025-02-05 15:38:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9401 states to 9401 states and 15501 transitions. [2025-02-05 15:38:20,368 INFO L78 Accepts]: Start accepts. Automaton has 9401 states and 15501 transitions. Word has length 127 [2025-02-05 15:38:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:20,369 INFO L471 AbstractCegarLoop]: Abstraction has 9401 states and 15501 transitions. [2025-02-05 15:38:20,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (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) [2025-02-05 15:38:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 9401 states and 15501 transitions. [2025-02-05 15:38:20,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-02-05 15:38:20,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:20,373 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, 1, 1, 1] [2025-02-05 15:38:20,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-05 15:38:20,373 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:20,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:20,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1166827164, now seen corresponding path program 1 times [2025-02-05 15:38:20,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:20,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992726317] [2025-02-05 15:38:20,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:20,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:20,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-02-05 15:38:20,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 15:38:20,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:20,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 15:38:20,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:20,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992726317] [2025-02-05 15:38:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992726317] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:20,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584826391] [2025-02-05 15:38:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:20,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:20,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:20,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:20,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:20,507 INFO L87 Difference]: Start difference. First operand 9401 states and 15501 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2025-02-05 15:38:21,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:21,463 INFO L93 Difference]: Finished difference Result 28149 states and 47669 transitions. [2025-02-05 15:38:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:21,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 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 135 [2025-02-05 15:38:21,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:21,588 INFO L225 Difference]: With dead ends: 28149 [2025-02-05 15:38:21,589 INFO L226 Difference]: Without dead ends: 18766 [2025-02-05 15:38:21,642 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 [2025-02-05 15:38:21,643 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 889 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 4502 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:21,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 4502 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:38:21,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18766 states. [2025-02-05 15:38:22,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18766 to 18665. [2025-02-05 15:38:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18665 states, 14420 states have (on average 1.6020804438280167) internal successors, (23102), 14961 states have internal predecessors, (23102), 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) [2025-02-05 15:38:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18665 states to 18665 states and 31426 transitions. [2025-02-05 15:38:22,543 INFO L78 Accepts]: Start accepts. Automaton has 18665 states and 31426 transitions. Word has length 135 [2025-02-05 15:38:22,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:22,544 INFO L471 AbstractCegarLoop]: Abstraction has 18665 states and 31426 transitions. [2025-02-05 15:38:22,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2025-02-05 15:38:22,544 INFO L276 IsEmpty]: Start isEmpty. Operand 18665 states and 31426 transitions. [2025-02-05 15:38:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 15:38:22,551 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:22,552 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, 1, 1, 1, 1] [2025-02-05 15:38:22,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-05 15:38:22,552 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:22,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1250280153, now seen corresponding path program 1 times [2025-02-05 15:38:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:22,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509302544] [2025-02-05 15:38:22,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:22,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 15:38:22,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 15:38:22,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:22,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 15:38:22,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509302544] [2025-02-05 15:38:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509302544] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:22,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:22,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520109615] [2025-02-05 15:38:22,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:22,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:22,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:22,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:22,658 INFO L87 Difference]: Start difference. First operand 18665 states and 31426 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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) [2025-02-05 15:38:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:23,703 INFO L93 Difference]: Finished difference Result 37456 states and 64075 transitions. [2025-02-05 15:38:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:23,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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 136 [2025-02-05 15:38:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:23,847 INFO L225 Difference]: With dead ends: 37456 [2025-02-05 15:38:23,847 INFO L226 Difference]: Without dead ends: 18809 [2025-02-05 15:38:24,128 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 [2025-02-05 15:38:24,129 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 12 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2618 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 [2025-02-05 15:38:24,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2618 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:24,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18809 states. [2025-02-05 15:38:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18809 to 18745. [2025-02-05 15:38:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18745 states, 14492 states have (on average 1.5996411813414297) internal successors, (23182), 15017 states have internal predecessors, (23182), 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) [2025-02-05 15:38:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18745 states to 18745 states and 31466 transitions. [2025-02-05 15:38:24,712 INFO L78 Accepts]: Start accepts. Automaton has 18745 states and 31466 transitions. Word has length 136 [2025-02-05 15:38:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:24,713 INFO L471 AbstractCegarLoop]: Abstraction has 18745 states and 31466 transitions. [2025-02-05 15:38:24,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (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) [2025-02-05 15:38:24,713 INFO L276 IsEmpty]: Start isEmpty. Operand 18745 states and 31466 transitions. [2025-02-05 15:38:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 15:38:24,717 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:24,717 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, 1, 1, 1] [2025-02-05 15:38:24,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-05 15:38:24,718 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:24,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:24,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1754946811, now seen corresponding path program 1 times [2025-02-05 15:38:24,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:24,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399939936] [2025-02-05 15:38:24,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:24,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:24,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-02-05 15:38:24,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-02-05 15:38:24,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:24,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 15:38:24,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:24,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399939936] [2025-02-05 15:38:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399939936] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:24,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:24,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742058118] [2025-02-05 15:38:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:24,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:24,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:24,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:24,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:24,847 INFO L87 Difference]: Start difference. First operand 18745 states and 31466 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-02-05 15:38:26,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:26,628 INFO L93 Difference]: Finished difference Result 56321 states and 98233 transitions. [2025-02-05 15:38:26,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:26,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 145 [2025-02-05 15:38:26,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:26,902 INFO L225 Difference]: With dead ends: 56321 [2025-02-05 15:38:26,902 INFO L226 Difference]: Without dead ends: 37594 [2025-02-05 15:38:27,026 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 [2025-02-05 15:38:27,027 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 884 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:27,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 4466 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 15:38:27,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37594 states. [2025-02-05 15:38:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37594 to 37429. [2025-02-05 15:38:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37429 states, 28947 states have (on average 1.596262134245345) internal successors, (46207), 29988 states have internal predecessors, (46207), 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) [2025-02-05 15:38:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37429 states to 37429 states and 64785 transitions. [2025-02-05 15:38:28,960 INFO L78 Accepts]: Start accepts. Automaton has 37429 states and 64785 transitions. Word has length 145 [2025-02-05 15:38:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:28,962 INFO L471 AbstractCegarLoop]: Abstraction has 37429 states and 64785 transitions. [2025-02-05 15:38:28,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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) [2025-02-05 15:38:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 37429 states and 64785 transitions. [2025-02-05 15:38:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-02-05 15:38:28,967 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:28,967 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, 1, 1, 1, 1] [2025-02-05 15:38:28,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-05 15:38:28,968 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:28,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1933612151, now seen corresponding path program 1 times [2025-02-05 15:38:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228319096] [2025-02-05 15:38:28,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:28,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-02-05 15:38:28,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-02-05 15:38:28,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:28,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-05 15:38:29,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:29,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228319096] [2025-02-05 15:38:29,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228319096] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:29,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:29,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474665240] [2025-02-05 15:38:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:29,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:29,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:29,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:29,222 INFO L87 Difference]: Start difference. First operand 37429 states and 64785 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2025-02-05 15:38:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:31,029 INFO L93 Difference]: Finished difference Result 75128 states and 133369 transitions. [2025-02-05 15:38:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 146 [2025-02-05 15:38:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:31,367 INFO L225 Difference]: With dead ends: 75128 [2025-02-05 15:38:31,367 INFO L226 Difference]: Without dead ends: 37717 [2025-02-05 15:38:31,903 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 [2025-02-05 15:38:31,903 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 11 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2618 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 [2025-02-05 15:38:31,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2618 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:31,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37717 states. [2025-02-05 15:38:33,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37717 to 37589. [2025-02-05 15:38:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37589 states, 29091 states have (on average 1.593860644185487) internal successors, (46367), 30132 states have internal predecessors, (46367), 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) [2025-02-05 15:38:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37589 states to 37589 states and 64889 transitions. [2025-02-05 15:38:34,126 INFO L78 Accepts]: Start accepts. Automaton has 37589 states and 64889 transitions. Word has length 146 [2025-02-05 15:38:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:34,127 INFO L471 AbstractCegarLoop]: Abstraction has 37589 states and 64889 transitions. [2025-02-05 15:38:34,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2025-02-05 15:38:34,127 INFO L276 IsEmpty]: Start isEmpty. Operand 37589 states and 64889 transitions. [2025-02-05 15:38:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-02-05 15:38:34,132 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:34,132 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, 1, 1, 1] [2025-02-05 15:38:34,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-05 15:38:34,133 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:34,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash 715045086, now seen corresponding path program 1 times [2025-02-05 15:38:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:34,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569474953] [2025-02-05 15:38:34,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:34,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:34,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-05 15:38:34,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-05 15:38:34,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:34,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-02-05 15:38:34,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569474953] [2025-02-05 15:38:34,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569474953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:34,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:34,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 15:38:34,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139452591] [2025-02-05 15:38:34,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:34,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 15:38:34,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:34,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 15:38:34,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:38:34,296 INFO L87 Difference]: Start difference. First operand 37589 states and 64889 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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) [2025-02-05 15:38:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:38,151 INFO L93 Difference]: Finished difference Result 113089 states and 207195 transitions. [2025-02-05 15:38:38,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:38:38,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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 156 [2025-02-05 15:38:38,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:39,122 INFO L225 Difference]: With dead ends: 113089 [2025-02-05 15:38:39,123 INFO L226 Difference]: Without dead ends: 75518 [2025-02-05 15:38:39,488 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 [2025-02-05 15:38:39,489 INFO L435 NwaCegarLoop]: 951 mSDtfsCounter, 880 mSDsluCounter, 3487 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 15:38:39,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 4438 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 15:38:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75518 states. [2025-02-05 15:38:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75518 to 75225. [2025-02-05 15:38:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75225 states, 58226 states have (on average 1.5913165939614604) internal successors, (92656), 60299 states have internal predecessors, (92656), 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) [2025-02-05 15:38:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75225 states to 75225 states and 136344 transitions. [2025-02-05 15:38:43,317 INFO L78 Accepts]: Start accepts. Automaton has 75225 states and 136344 transitions. Word has length 156 [2025-02-05 15:38:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:38:43,317 INFO L471 AbstractCegarLoop]: Abstraction has 75225 states and 136344 transitions. [2025-02-05 15:38:43,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 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) [2025-02-05 15:38:43,318 INFO L276 IsEmpty]: Start isEmpty. Operand 75225 states and 136344 transitions. [2025-02-05 15:38:43,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-02-05 15:38:43,323 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:38:43,324 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, 1, 1, 1, 1] [2025-02-05 15:38:43,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-05 15:38:43,324 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:38:43,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:38:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1730325253, now seen corresponding path program 1 times [2025-02-05 15:38:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:38:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671022648] [2025-02-05 15:38:43,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:38:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:38:43,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-02-05 15:38:43,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-02-05 15:38:43,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:38:43,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:38:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 15:38:43,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:38:43,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671022648] [2025-02-05 15:38:43,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671022648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:38:43,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:38:43,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 15:38:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438431052] [2025-02-05 15:38:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:38:43,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 15:38:43,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:38:43,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 15:38:43,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 15:38:43,423 INFO L87 Difference]: Start difference. First operand 75225 states and 136344 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2025-02-05 15:38:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:38:48,994 INFO L93 Difference]: Finished difference Result 151072 states and 285375 transitions. [2025-02-05 15:38:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:38:48,996 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 157 [2025-02-05 15:38:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:38:49,519 INFO L225 Difference]: With dead ends: 151072 [2025-02-05 15:38:49,520 INFO L226 Difference]: Without dead ends: 75865 [2025-02-05 15:38:50,538 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 [2025-02-05 15:38:50,539 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 10 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2618 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 [2025-02-05 15:38:50,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2618 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:38:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75865 states.