./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:36:11,678 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:36:11,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:36:11,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:36:11,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:36:11,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:36:11,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:36:11,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:36:11,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:36:11,760 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:36:11,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:36:11,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:36:11,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:36:11,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:36:11,761 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:36:11,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:36:11,761 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:36:11,762 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:36:11,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:11,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:36:11,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:36:11,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:36:11,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:36:11,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:36:11,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:36:11,764 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2025-03-16 18:36:11,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:36:11,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:36:11,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:36:11,986 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:36:11,986 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:36:11,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2025-03-16 18:36:13,122 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/080907b2c/fd22e5d47cbb492f864c39dc2dfc81cf/FLAG6c2c05a8b [2025-03-16 18:36:13,418 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:36:13,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2025-03-16 18:36:13,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/080907b2c/fd22e5d47cbb492f864c39dc2dfc81cf/FLAG6c2c05a8b [2025-03-16 18:36:13,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/080907b2c/fd22e5d47cbb492f864c39dc2dfc81cf [2025-03-16 18:36:13,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:36:13,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:36:13,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:13,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:36:13,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:36:13,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:13" (1/1) ... [2025-03-16 18:36:13,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dea62d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:13, skipping insertion in model container [2025-03-16 18:36:13,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:13" (1/1) ... [2025-03-16 18:36:13,723 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:36:13,877 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2025-03-16 18:36:14,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:14,123 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:36:14,128 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2025-03-16 18:36:14,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [67] [2025-03-16 18:36:14,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [259] [2025-03-16 18:36:14,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [268] [2025-03-16 18:36:14,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [366] [2025-03-16 18:36:14,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1033] [2025-03-16 18:36:14,129 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1399] [2025-03-16 18:36:14,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2844] [2025-03-16 18:36:14,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3195] [2025-03-16 18:36:14,130 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3313] [2025-03-16 18:36:14,135 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2025-03-16 18:36:14,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:14,229 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:36:14,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14 WrapperNode [2025-03-16 18:36:14,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:14,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:14,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:36:14,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:36:14,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,279 INFO L138 Inliner]: procedures = 88, calls = 338, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 794 [2025-03-16 18:36:14,280 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:14,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:36:14,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:36:14,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:36:14,288 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,293 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,309 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:36:14,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,309 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,325 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,337 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,339 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:36:14,347 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:36:14,347 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:36:14,347 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:36:14,348 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (1/1) ... [2025-03-16 18:36:14,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:14,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:14,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 18:36:14,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 18:36:14,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:36:14,400 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-16 18:36:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-16 18:36:14,400 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:36:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:36:14,400 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:36:14,400 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:36:14,401 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-16 18:36:14,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:36:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:36:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:36:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:36:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:36:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:36:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:36:14,402 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:36:14,402 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:36:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:36:14,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:36:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:36:14,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:36:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:36:14,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:36:14,545 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:36:14,548 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:36:14,589 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1679: #res := ~retValue_acc~10; [2025-03-16 18:36:14,612 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3310: #res := ~retValue_acc~23; [2025-03-16 18:36:14,637 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3232: #res := ~retValue_acc~21; [2025-03-16 18:36:14,640 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1474: #res := ~retValue_acc~6; [2025-03-16 18:36:14,893 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2164: #res := ~retValue_acc~14; [2025-03-16 18:36:14,945 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2268: #res := ~retValue_acc~17; [2025-03-16 18:36:14,956 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3271: #res := ~retValue_acc~22; [2025-03-16 18:36:14,975 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1670: #res := ~retValue_acc~9; [2025-03-16 18:36:15,182 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2254-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~16#1; [2025-03-16 18:36:15,183 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1627-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~7#1; [2025-03-16 18:36:15,231 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1799-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~12#1; [2025-03-16 18:36:15,231 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1812-1: isIdle_#res#1 := isIdle_~retValue_acc~13#1; [2025-03-16 18:36:15,288 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L719: #res := ~retValue_acc~1; [2025-03-16 18:36:15,343 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3192-1: main_#res#1 := main_~retValue_acc~20#1; [2025-03-16 18:36:15,343 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3345-1: valid_product_#res#1 := valid_product_~retValue_acc~25#1; [2025-03-16 18:36:15,352 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L483: #res := ~retValue_acc~0; [2025-03-16 18:36:15,356 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1030: #res := ~retValue_acc~2; [2025-03-16 18:36:15,459 INFO L? ?]: Removed 435 outVars from TransFormulas that were not future-live. [2025-03-16 18:36:15,460 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:36:15,480 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:36:15,480 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:36:15,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:15 BoogieIcfgContainer [2025-03-16 18:36:15,481 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:36:15,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:36:15,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:36:15,485 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:36:15,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:36:13" (1/3) ... [2025-03-16 18:36:15,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6b5a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:15, skipping insertion in model container [2025-03-16 18:36:15,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:14" (2/3) ... [2025-03-16 18:36:15,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6b5a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:15, skipping insertion in model container [2025-03-16 18:36:15,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:15" (3/3) ... [2025-03-16 18:36:15,487 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2025-03-16 18:36:15,497 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:36:15,500 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product17.cil.c that has 25 procedures, 554 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:36:15,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:36:15,567 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;@3447e5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:36:15,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:36:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 428 states have (on average 1.6962616822429906) internal successors, (726), 446 states have internal predecessors, (726), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2025-03-16 18:36:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-03-16 18:36:15,591 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:15,591 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:15,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:15,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:15,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1694933290, now seen corresponding path program 1 times [2025-03-16 18:36:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:15,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684619850] [2025-03-16 18:36:15,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:15,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-03-16 18:36:15,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-03-16 18:36:15,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:15,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:16,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:16,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684619850] [2025-03-16 18:36:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684619850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:16,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237622021] [2025-03-16 18:36:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:16,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:16,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:16,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:16,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:16,230 INFO L87 Difference]: Start difference. First operand has 554 states, 428 states have (on average 1.6962616822429906) internal successors, (726), 446 states have internal predecessors, (726), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:16,429 INFO L93 Difference]: Finished difference Result 1109 states and 1868 transitions. [2025-03-16 18:36:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:16,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 81 [2025-03-16 18:36:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:16,446 INFO L225 Difference]: With dead ends: 1109 [2025-03-16 18:36:16,447 INFO L226 Difference]: Without dead ends: 560 [2025-03-16 18:36:16,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:16,459 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 91 mSDsluCounter, 4469 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:16,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5380 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:36:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-16 18:36:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 558. [2025-03-16 18:36:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 432 states have (on average 1.6875) internal successors, (729), 450 states have internal predecessors, (729), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2025-03-16 18:36:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 930 transitions. [2025-03-16 18:36:16,540 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 930 transitions. Word has length 81 [2025-03-16 18:36:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:16,541 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 930 transitions. [2025-03-16 18:36:16,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 930 transitions. [2025-03-16 18:36:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 18:36:16,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:16,546 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:16,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:36:16,547 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:16,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash 859012729, now seen corresponding path program 1 times [2025-03-16 18:36:16,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:16,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015243223] [2025-03-16 18:36:16,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:16,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:16,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 18:36:16,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 18:36:16,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:16,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:16,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015243223] [2025-03-16 18:36:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015243223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:16,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277634950] [2025-03-16 18:36:16,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:16,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:16,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:16,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:16,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:16,716 INFO L87 Difference]: Start difference. First operand 558 states and 930 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:16,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:16,792 INFO L93 Difference]: Finished difference Result 1102 states and 1845 transitions. [2025-03-16 18:36:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:16,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2025-03-16 18:36:16,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:16,797 INFO L225 Difference]: With dead ends: 1102 [2025-03-16 18:36:16,797 INFO L226 Difference]: Without dead ends: 534 [2025-03-16 18:36:16,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:16,802 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 14 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:16,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2695 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2025-03-16 18:36:16,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2025-03-16 18:36:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 411 states have (on average 1.6788321167883211) internal successors, (690), 427 states have internal predecessors, (690), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 887 transitions. [2025-03-16 18:36:16,832 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 887 transitions. Word has length 82 [2025-03-16 18:36:16,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:16,832 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 887 transitions. [2025-03-16 18:36:16,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 887 transitions. [2025-03-16 18:36:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-16 18:36:16,835 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:16,835 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:16,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:36:16,836 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:16,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 392206457, now seen corresponding path program 1 times [2025-03-16 18:36:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:16,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641260169] [2025-03-16 18:36:16,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:16,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:16,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-16 18:36:16,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-16 18:36:16,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:16,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:17,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:17,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641260169] [2025-03-16 18:36:17,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641260169] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:17,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:17,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:17,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665312583] [2025-03-16 18:36:17,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:17,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:17,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:17,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:17,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:17,085 INFO L87 Difference]: Start difference. First operand 534 states and 887 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:17,174 INFO L93 Difference]: Finished difference Result 1065 states and 1777 transitions. [2025-03-16 18:36:17,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:17,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 82 [2025-03-16 18:36:17,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:17,178 INFO L225 Difference]: With dead ends: 1065 [2025-03-16 18:36:17,179 INFO L226 Difference]: Without dead ends: 528 [2025-03-16 18:36:17,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:17,183 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 77 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5186 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:17,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5186 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:17,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2025-03-16 18:36:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2025-03-16 18:36:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.671604938271605) internal successors, (677), 421 states have internal predecessors, (677), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:17,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 874 transitions. [2025-03-16 18:36:17,205 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 874 transitions. Word has length 82 [2025-03-16 18:36:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:17,206 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 874 transitions. [2025-03-16 18:36:17,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 874 transitions. [2025-03-16 18:36:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-16 18:36:17,209 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:17,209 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:17,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:36:17,209 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:17,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash 613811428, now seen corresponding path program 1 times [2025-03-16 18:36:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378303312] [2025-03-16 18:36:17,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:17,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-16 18:36:17,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-16 18:36:17,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:17,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:17,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:17,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378303312] [2025-03-16 18:36:17,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378303312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:17,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:17,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:17,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650471578] [2025-03-16 18:36:17,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:17,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:17,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:17,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:17,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:17,399 INFO L87 Difference]: Start difference. First operand 528 states and 874 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:17,477 INFO L93 Difference]: Finished difference Result 1053 states and 1751 transitions. [2025-03-16 18:36:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:17,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 83 [2025-03-16 18:36:17,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:17,481 INFO L225 Difference]: With dead ends: 1053 [2025-03-16 18:36:17,481 INFO L226 Difference]: Without dead ends: 522 [2025-03-16 18:36:17,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:17,486 INFO L435 NwaCegarLoop]: 864 mSDtfsCounter, 63 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:17,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5126 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:17,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2025-03-16 18:36:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2025-03-16 18:36:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6641604010025062) internal successors, (664), 415 states have internal predecessors, (664), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 861 transitions. [2025-03-16 18:36:17,508 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 861 transitions. Word has length 83 [2025-03-16 18:36:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:17,508 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 861 transitions. [2025-03-16 18:36:17,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 861 transitions. [2025-03-16 18:36:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-16 18:36:17,510 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:17,510 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:17,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:36:17,511 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:17,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:17,511 INFO L85 PathProgramCache]: Analyzing trace with hash 845062067, now seen corresponding path program 1 times [2025-03-16 18:36:17,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390279170] [2025-03-16 18:36:17,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:17,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:17,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-16 18:36:17,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-16 18:36:17,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:17,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:17,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390279170] [2025-03-16 18:36:17,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390279170] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:17,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:17,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:17,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970609805] [2025-03-16 18:36:17,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:17,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:17,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:17,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:17,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:17,679 INFO L87 Difference]: Start difference. First operand 522 states and 861 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:17,740 INFO L93 Difference]: Finished difference Result 1041 states and 1725 transitions. [2025-03-16 18:36:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 84 [2025-03-16 18:36:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:17,744 INFO L225 Difference]: With dead ends: 1041 [2025-03-16 18:36:17,744 INFO L226 Difference]: Without dead ends: 516 [2025-03-16 18:36:17,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:17,760 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 49 mSDsluCounter, 4214 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5066 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:17,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5066 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-03-16 18:36:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2025-03-16 18:36:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 393 states have (on average 1.6564885496183206) internal successors, (651), 409 states have internal predecessors, (651), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 848 transitions. [2025-03-16 18:36:17,784 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 848 transitions. Word has length 84 [2025-03-16 18:36:17,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:17,785 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 848 transitions. [2025-03-16 18:36:17,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 848 transitions. [2025-03-16 18:36:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-16 18:36:17,786 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:17,787 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:17,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:36:17,787 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:17,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash -635213333, now seen corresponding path program 1 times [2025-03-16 18:36:17,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:17,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376163935] [2025-03-16 18:36:17,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:17,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:17,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-16 18:36:17,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-16 18:36:17,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:17,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:17,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:17,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376163935] [2025-03-16 18:36:17,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376163935] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:17,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:17,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:17,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512481916] [2025-03-16 18:36:17,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:17,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:17,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:17,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:17,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:17,909 INFO L87 Difference]: Start difference. First operand 516 states and 848 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:17,962 INFO L93 Difference]: Finished difference Result 1029 states and 1699 transitions. [2025-03-16 18:36:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:17,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 84 [2025-03-16 18:36:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:17,967 INFO L225 Difference]: With dead ends: 1029 [2025-03-16 18:36:17,967 INFO L226 Difference]: Without dead ends: 516 [2025-03-16 18:36:17,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:17,970 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 24 mSDsluCounter, 4178 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5018 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:17,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5018 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-03-16 18:36:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2025-03-16 18:36:17,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 393 states have (on average 1.6539440203562341) internal successors, (650), 409 states have internal predecessors, (650), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 847 transitions. [2025-03-16 18:36:17,992 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 847 transitions. Word has length 84 [2025-03-16 18:36:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:17,992 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 847 transitions. [2025-03-16 18:36:17,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 847 transitions. [2025-03-16 18:36:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-16 18:36:17,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:17,995 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:17,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:36:17,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:17,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1375328414, now seen corresponding path program 1 times [2025-03-16 18:36:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:17,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763754293] [2025-03-16 18:36:17,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:17,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:18,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-16 18:36:18,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-16 18:36:18,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:18,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763754293] [2025-03-16 18:36:18,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763754293] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:18,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:18,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886209275] [2025-03-16 18:36:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:18,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:18,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:18,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,100 INFO L87 Difference]: Start difference. First operand 516 states and 847 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:18,147 INFO L93 Difference]: Finished difference Result 1020 states and 1684 transitions. [2025-03-16 18:36:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2025-03-16 18:36:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:18,151 INFO L225 Difference]: With dead ends: 1020 [2025-03-16 18:36:18,151 INFO L226 Difference]: Without dead ends: 516 [2025-03-16 18:36:18,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,157 INFO L435 NwaCegarLoop]: 832 mSDtfsCounter, 15 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:18,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2481 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:18,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-03-16 18:36:18,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2025-03-16 18:36:18,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 393 states have (on average 1.6513994910941476) internal successors, (649), 409 states have internal predecessors, (649), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 846 transitions. [2025-03-16 18:36:18,177 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 846 transitions. Word has length 85 [2025-03-16 18:36:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:18,177 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 846 transitions. [2025-03-16 18:36:18,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 846 transitions. [2025-03-16 18:36:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-16 18:36:18,179 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:18,179 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:18,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:36:18,179 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:18,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1087360155, now seen corresponding path program 1 times [2025-03-16 18:36:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:18,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006488742] [2025-03-16 18:36:18,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:18,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:18,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-16 18:36:18,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-16 18:36:18,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:18,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:18,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:18,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:18,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006488742] [2025-03-16 18:36:18,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006488742] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:18,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:18,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:18,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615697575] [2025-03-16 18:36:18,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:18,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:18,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:18,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:18,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,263 INFO L87 Difference]: Start difference. First operand 516 states and 846 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:18,299 INFO L93 Difference]: Finished difference Result 1020 states and 1682 transitions. [2025-03-16 18:36:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2025-03-16 18:36:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:18,303 INFO L225 Difference]: With dead ends: 1020 [2025-03-16 18:36:18,303 INFO L226 Difference]: Without dead ends: 516 [2025-03-16 18:36:18,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,306 INFO L435 NwaCegarLoop]: 833 mSDtfsCounter, 14 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:18,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2483 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:18,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-03-16 18:36:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2025-03-16 18:36:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 393 states have (on average 1.6488549618320612) internal successors, (648), 409 states have internal predecessors, (648), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 845 transitions. [2025-03-16 18:36:18,334 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 845 transitions. Word has length 86 [2025-03-16 18:36:18,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:18,335 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 845 transitions. [2025-03-16 18:36:18,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 845 transitions. [2025-03-16 18:36:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-16 18:36:18,336 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:18,336 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:18,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:36:18,336 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:18,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:18,337 INFO L85 PathProgramCache]: Analyzing trace with hash 947008257, now seen corresponding path program 1 times [2025-03-16 18:36:18,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:18,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579299459] [2025-03-16 18:36:18,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:18,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:18,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-16 18:36:18,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-16 18:36:18,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:18,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:18,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:18,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579299459] [2025-03-16 18:36:18,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579299459] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:18,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:18,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:18,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604837303] [2025-03-16 18:36:18,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:18,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:18,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:18,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:18,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,434 INFO L87 Difference]: Start difference. First operand 516 states and 845 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:18,477 INFO L93 Difference]: Finished difference Result 1020 states and 1680 transitions. [2025-03-16 18:36:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2025-03-16 18:36:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:18,482 INFO L225 Difference]: With dead ends: 1020 [2025-03-16 18:36:18,482 INFO L226 Difference]: Without dead ends: 516 [2025-03-16 18:36:18,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,487 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 13 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:18,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2485 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-03-16 18:36:18,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2025-03-16 18:36:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 393 states have (on average 1.6463104325699744) internal successors, (647), 409 states have internal predecessors, (647), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 844 transitions. [2025-03-16 18:36:18,504 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 844 transitions. Word has length 87 [2025-03-16 18:36:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:18,504 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 844 transitions. [2025-03-16 18:36:18,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 844 transitions. [2025-03-16 18:36:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 18:36:18,507 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:18,507 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:18,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:36:18,507 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1087796254, now seen corresponding path program 1 times [2025-03-16 18:36:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:18,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78844228] [2025-03-16 18:36:18,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:18,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 18:36:18,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 18:36:18,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:18,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:18,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78844228] [2025-03-16 18:36:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78844228] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:18,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:18,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:18,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959437630] [2025-03-16 18:36:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:18,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:18,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:18,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:18,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,613 INFO L87 Difference]: Start difference. First operand 516 states and 844 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:18,653 INFO L93 Difference]: Finished difference Result 1020 states and 1678 transitions. [2025-03-16 18:36:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:18,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2025-03-16 18:36:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:18,657 INFO L225 Difference]: With dead ends: 1020 [2025-03-16 18:36:18,657 INFO L226 Difference]: Without dead ends: 516 [2025-03-16 18:36:18,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:18,661 INFO L435 NwaCegarLoop]: 835 mSDtfsCounter, 12 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:18,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2487 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2025-03-16 18:36:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2025-03-16 18:36:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 393 states have (on average 1.643765903307888) internal successors, (646), 409 states have internal predecessors, (646), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-16 18:36:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 843 transitions. [2025-03-16 18:36:18,682 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 843 transitions. Word has length 88 [2025-03-16 18:36:18,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:18,682 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 843 transitions. [2025-03-16 18:36:18,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:36:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 843 transitions. [2025-03-16 18:36:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-16 18:36:18,684 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:18,684 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:18,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:36:18,684 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:18,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1353986404, now seen corresponding path program 1 times [2025-03-16 18:36:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:18,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981468294] [2025-03-16 18:36:18,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:18,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 18:36:18,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 18:36:18,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:18,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:18,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:18,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981468294] [2025-03-16 18:36:18,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981468294] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:18,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275980248] [2025-03-16 18:36:18,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:18,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:18,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:18,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:36:18,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 18:36:19,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 18:36:19,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:19,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:19,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:19,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:19,210 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275980248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:19,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:19,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 18:36:19,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128373995] [2025-03-16 18:36:19,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:19,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:19,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:19,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:19,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:19,211 INFO L87 Difference]: Start difference. First operand 516 states and 843 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:19,263 INFO L93 Difference]: Finished difference Result 1468 states and 2427 transitions. [2025-03-16 18:36:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:19,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2025-03-16 18:36:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:19,269 INFO L225 Difference]: With dead ends: 1468 [2025-03-16 18:36:19,269 INFO L226 Difference]: Without dead ends: 966 [2025-03-16 18:36:19,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:19,272 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 786 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:19,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1596 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2025-03-16 18:36:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 951. [2025-03-16 18:36:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 732 states have (on average 1.6557377049180328) internal successors, (1212), 763 states have internal predecessors, (1212), 176 states have call successors, (176), 43 states have call predecessors, (176), 42 states have return successors, (178), 170 states have call predecessors, (178), 173 states have call successors, (178) [2025-03-16 18:36:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1566 transitions. [2025-03-16 18:36:19,304 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1566 transitions. Word has length 89 [2025-03-16 18:36:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:19,305 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1566 transitions. [2025-03-16 18:36:19,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1566 transitions. [2025-03-16 18:36:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 18:36:19,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:19,307 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:19,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 18:36:19,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 18:36:19,508 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:19,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -722622502, now seen corresponding path program 1 times [2025-03-16 18:36:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361296765] [2025-03-16 18:36:19,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:19,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:36:19,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:36:19,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:19,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:19,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361296765] [2025-03-16 18:36:19,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361296765] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:19,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151914357] [2025-03-16 18:36:19,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:19,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:19,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:19,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:19,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:36:19,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:36:19,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:36:19,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:19,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:19,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:19,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:19,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:19,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151914357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:19,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:19,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 18:36:19,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053523978] [2025-03-16 18:36:19,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:19,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:19,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:19,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:19,979 INFO L87 Difference]: Start difference. First operand 951 states and 1566 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:20,045 INFO L93 Difference]: Finished difference Result 2338 states and 3875 transitions. [2025-03-16 18:36:20,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:20,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2025-03-16 18:36:20,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:20,055 INFO L225 Difference]: With dead ends: 2338 [2025-03-16 18:36:20,055 INFO L226 Difference]: Without dead ends: 1401 [2025-03-16 18:36:20,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:20,060 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 785 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:20,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1654 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:20,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2025-03-16 18:36:20,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1353. [2025-03-16 18:36:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1044 states have (on average 1.6685823754789273) internal successors, (1742), 1090 states have internal predecessors, (1742), 249 states have call successors, (249), 59 states have call predecessors, (249), 59 states have return successors, (256), 242 states have call predecessors, (256), 246 states have call successors, (256) [2025-03-16 18:36:20,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 2247 transitions. [2025-03-16 18:36:20,111 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 2247 transitions. Word has length 90 [2025-03-16 18:36:20,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:20,112 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 2247 transitions. [2025-03-16 18:36:20,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:36:20,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 2247 transitions. [2025-03-16 18:36:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-16 18:36:20,116 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:20,116 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:20,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:20,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 18:36:20,317 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:20,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1990005921, now seen corresponding path program 1 times [2025-03-16 18:36:20,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:20,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291048364] [2025-03-16 18:36:20,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:20,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:20,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-16 18:36:20,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-16 18:36:20,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:20,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:20,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:20,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291048364] [2025-03-16 18:36:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291048364] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:20,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:20,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:20,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018847514] [2025-03-16 18:36:20,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:20,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:20,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:20,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:20,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:20,435 INFO L87 Difference]: Start difference. First operand 1353 states and 2247 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:36:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:20,898 INFO L93 Difference]: Finished difference Result 4003 states and 6750 transitions. [2025-03-16 18:36:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:20,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2025-03-16 18:36:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:20,914 INFO L225 Difference]: With dead ends: 4003 [2025-03-16 18:36:20,914 INFO L226 Difference]: Without dead ends: 2664 [2025-03-16 18:36:20,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:20,923 INFO L435 NwaCegarLoop]: 946 mSDtfsCounter, 833 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 4358 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:20,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 4358 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:36:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2025-03-16 18:36:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2617. [2025-03-16 18:36:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2617 states, 2025 states have (on average 1.671604938271605) internal successors, (3385), 2113 states have internal predecessors, (3385), 477 states have call successors, (477), 112 states have call predecessors, (477), 114 states have return successors, (553), 469 states have call predecessors, (553), 473 states have call successors, (553) [2025-03-16 18:36:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2617 states to 2617 states and 4415 transitions. [2025-03-16 18:36:21,028 INFO L78 Accepts]: Start accepts. Automaton has 2617 states and 4415 transitions. Word has length 92 [2025-03-16 18:36:21,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:21,028 INFO L471 AbstractCegarLoop]: Abstraction has 2617 states and 4415 transitions. [2025-03-16 18:36:21,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:36:21,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2617 states and 4415 transitions. [2025-03-16 18:36:21,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-16 18:36:21,032 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:21,032 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:21,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:36:21,032 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:21,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:21,032 INFO L85 PathProgramCache]: Analyzing trace with hash -876371886, now seen corresponding path program 1 times [2025-03-16 18:36:21,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:21,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656819016] [2025-03-16 18:36:21,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:21,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:21,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:36:21,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:36:21,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:21,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:21,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:21,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656819016] [2025-03-16 18:36:21,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656819016] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:21,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010076002] [2025-03-16 18:36:21,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:21,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:21,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:21,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:21,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:36:21,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-16 18:36:21,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-16 18:36:21,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:21,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:21,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 18:36:21,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:21,539 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010076002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:21,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 18:36:21,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854619857] [2025-03-16 18:36:21,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:21,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:21,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:21,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:21,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:21,541 INFO L87 Difference]: Start difference. First operand 2617 states and 4415 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:36:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:21,805 INFO L93 Difference]: Finished difference Result 7569 states and 12958 transitions. [2025-03-16 18:36:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:21,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2025-03-16 18:36:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:21,839 INFO L225 Difference]: With dead ends: 7569 [2025-03-16 18:36:21,839 INFO L226 Difference]: Without dead ends: 4967 [2025-03-16 18:36:21,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:21,858 INFO L435 NwaCegarLoop]: 867 mSDtfsCounter, 699 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:21,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1616 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:36:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2025-03-16 18:36:22,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 4930. [2025-03-16 18:36:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 3804 states have (on average 1.6382754994742377) internal successors, (6232), 3978 states have internal predecessors, (6232), 902 states have call successors, (902), 218 states have call predecessors, (902), 223 states have return successors, (1151), 889 states have call predecessors, (1151), 896 states have call successors, (1151) [2025-03-16 18:36:22,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 8285 transitions. [2025-03-16 18:36:22,114 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 8285 transitions. Word has length 93 [2025-03-16 18:36:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:22,114 INFO L471 AbstractCegarLoop]: Abstraction has 4930 states and 8285 transitions. [2025-03-16 18:36:22,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:36:22,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 8285 transitions. [2025-03-16 18:36:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-16 18:36:22,118 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:22,119 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:22,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:22,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:22,319 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:22,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1435925573, now seen corresponding path program 1 times [2025-03-16 18:36:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:22,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142004587] [2025-03-16 18:36:22,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:22,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:36:22,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:36:22,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:22,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:22,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142004587] [2025-03-16 18:36:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142004587] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:22,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702787045] [2025-03-16 18:36:22,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:22,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:22,469 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:22,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:36:22,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:36:22,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:36:22,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:22,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:22,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-16 18:36:22,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:22,733 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702787045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 18:36:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527433161] [2025-03-16 18:36:22,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:22,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:22,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:22,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:22,734 INFO L87 Difference]: Start difference. First operand 4930 states and 8285 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:36:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:23,041 INFO L93 Difference]: Finished difference Result 14684 states and 24996 transitions. [2025-03-16 18:36:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2025-03-16 18:36:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:23,146 INFO L225 Difference]: With dead ends: 14684 [2025-03-16 18:36:23,146 INFO L226 Difference]: Without dead ends: 9771 [2025-03-16 18:36:23,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:23,167 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 830 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:23,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1721 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2025-03-16 18:36:23,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9668. [2025-03-16 18:36:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9668 states, 7488 states have (on average 1.6419604700854702) internal successors, (12295), 7816 states have internal predecessors, (12295), 1744 states have call successors, (1744), 418 states have call predecessors, (1744), 435 states have return successors, (2296), 1739 states have call predecessors, (2296), 1734 states have call successors, (2296) [2025-03-16 18:36:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9668 states to 9668 states and 16335 transitions. [2025-03-16 18:36:23,670 INFO L78 Accepts]: Start accepts. Automaton has 9668 states and 16335 transitions. Word has length 98 [2025-03-16 18:36:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:23,671 INFO L471 AbstractCegarLoop]: Abstraction has 9668 states and 16335 transitions. [2025-03-16 18:36:23,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:36:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 9668 states and 16335 transitions. [2025-03-16 18:36:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-16 18:36:23,674 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:23,674 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:23,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:23,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 18:36:23,874 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:23,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1941484198, now seen corresponding path program 1 times [2025-03-16 18:36:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:23,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680647755] [2025-03-16 18:36:23,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:23,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:36:23,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:36:23,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:23,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:23,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:23,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680647755] [2025-03-16 18:36:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680647755] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:23,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796919182] [2025-03-16 18:36:23,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:23,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:23,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:24,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 18:36:24,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:36:24,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:36:24,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:24,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:24,240 INFO L256 TraceCheckSpWp]: Trace formula consists of 1583 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:36:24,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:24,304 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:24,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796919182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:24,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:24,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-03-16 18:36:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970277137] [2025-03-16 18:36:24,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:24,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:24,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:24,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:24,305 INFO L87 Difference]: Start difference. First operand 9668 states and 16335 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-16 18:36:24,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:24,794 INFO L93 Difference]: Finished difference Result 18251 states and 30926 transitions. [2025-03-16 18:36:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:24,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 98 [2025-03-16 18:36:24,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:24,844 INFO L225 Difference]: With dead ends: 18251 [2025-03-16 18:36:24,844 INFO L226 Difference]: Without dead ends: 8597 [2025-03-16 18:36:24,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-16 18:36:24,882 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 709 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:24,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 3254 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:36:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8597 states. [2025-03-16 18:36:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8597 to 8575. [2025-03-16 18:36:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8575 states, 6663 states have (on average 1.6294461954074742) internal successors, (10857), 6938 states have internal predecessors, (10857), 1518 states have call successors, (1518), 378 states have call predecessors, (1518), 393 states have return successors, (1978), 1514 states have call predecessors, (1978), 1508 states have call successors, (1978) [2025-03-16 18:36:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8575 states to 8575 states and 14353 transitions. [2025-03-16 18:36:25,200 INFO L78 Accepts]: Start accepts. Automaton has 8575 states and 14353 transitions. Word has length 98 [2025-03-16 18:36:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:25,201 INFO L471 AbstractCegarLoop]: Abstraction has 8575 states and 14353 transitions. [2025-03-16 18:36:25,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-16 18:36:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 8575 states and 14353 transitions. [2025-03-16 18:36:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-16 18:36:25,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:25,204 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:25,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:25,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-16 18:36:25,405 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:25,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:25,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1898299507, now seen corresponding path program 1 times [2025-03-16 18:36:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741925357] [2025-03-16 18:36:25,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:25,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:25,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-16 18:36:25,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-16 18:36:25,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:25,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:25,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741925357] [2025-03-16 18:36:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741925357] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:25,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85197296] [2025-03-16 18:36:25,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:25,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:25,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:25,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:25,471 INFO L87 Difference]: Start difference. First operand 8575 states and 14353 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:36:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:25,875 INFO L93 Difference]: Finished difference Result 17184 states and 29105 transitions. [2025-03-16 18:36:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:25,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2025-03-16 18:36:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:25,931 INFO L225 Difference]: With dead ends: 17184 [2025-03-16 18:36:25,932 INFO L226 Difference]: Without dead ends: 8623 [2025-03-16 18:36:25,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:25,988 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 12 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:25,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2453 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8623 states. [2025-03-16 18:36:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8623 to 8591. [2025-03-16 18:36:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 6675 states have (on average 1.6277153558052435) internal successors, (10865), 6950 states have internal predecessors, (10865), 1518 states have call successors, (1518), 386 states have call predecessors, (1518), 397 states have return successors, (1952), 1510 states have call predecessors, (1952), 1508 states have call successors, (1952) [2025-03-16 18:36:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 14335 transitions. [2025-03-16 18:36:26,376 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 14335 transitions. Word has length 98 [2025-03-16 18:36:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:26,377 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 14335 transitions. [2025-03-16 18:36:26,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-16 18:36:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 14335 transitions. [2025-03-16 18:36:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-16 18:36:26,381 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:26,381 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:26,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 18:36:26,382 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:26,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1072178472, now seen corresponding path program 1 times [2025-03-16 18:36:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:26,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463306179] [2025-03-16 18:36:26,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:26,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:26,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-16 18:36:26,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-16 18:36:26,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:26,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:36:26,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:26,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463306179] [2025-03-16 18:36:26,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463306179] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:26,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:26,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:26,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323148035] [2025-03-16 18:36:26,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:26,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:26,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:26,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:26,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:26,534 INFO L87 Difference]: Start difference. First operand 8591 states and 14335 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:36:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:27,347 INFO L93 Difference]: Finished difference Result 25727 states and 44111 transitions. [2025-03-16 18:36:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:27,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 106 [2025-03-16 18:36:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:27,451 INFO L225 Difference]: With dead ends: 25727 [2025-03-16 18:36:27,451 INFO L226 Difference]: Without dead ends: 17150 [2025-03-16 18:36:27,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:27,503 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 827 mSDsluCounter, 3396 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:27,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 4334 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17150 states. [2025-03-16 18:36:27,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17150 to 17049. [2025-03-16 18:36:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17049 states, 13260 states have (on average 1.6239819004524887) internal successors, (21534), 13801 states have internal predecessors, (21534), 2991 states have call successors, (2991), 766 states have call predecessors, (2991), 797 states have return successors, (4505), 2993 states have call predecessors, (4505), 2973 states have call successors, (4505) [2025-03-16 18:36:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17049 states to 17049 states and 29030 transitions. [2025-03-16 18:36:28,124 INFO L78 Accepts]: Start accepts. Automaton has 17049 states and 29030 transitions. Word has length 106 [2025-03-16 18:36:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:28,125 INFO L471 AbstractCegarLoop]: Abstraction has 17049 states and 29030 transitions. [2025-03-16 18:36:28,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-16 18:36:28,125 INFO L276 IsEmpty]: Start isEmpty. Operand 17049 states and 29030 transitions. [2025-03-16 18:36:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-16 18:36:28,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:28,128 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:28,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 18:36:28,128 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:28,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash -192763291, now seen corresponding path program 1 times [2025-03-16 18:36:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58253483] [2025-03-16 18:36:28,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:28,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:28,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-16 18:36:28,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-16 18:36:28,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:28,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:36:28,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:28,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58253483] [2025-03-16 18:36:28,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58253483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:28,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:28,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:28,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631228387] [2025-03-16 18:36:28,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:28,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:28,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:28,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:28,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:28,201 INFO L87 Difference]: Start difference. First operand 17049 states and 29030 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:36:28,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:28,893 INFO L93 Difference]: Finished difference Result 34228 states and 59279 transitions. [2025-03-16 18:36:28,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:28,894 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2025-03-16 18:36:28,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:29,006 INFO L225 Difference]: With dead ends: 34228 [2025-03-16 18:36:29,006 INFO L226 Difference]: Without dead ends: 17193 [2025-03-16 18:36:29,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:29,114 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 12 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:29,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2447 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17193 states. [2025-03-16 18:36:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17193 to 17129. [2025-03-16 18:36:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17129 states, 13332 states have (on average 1.621212121212121) internal successors, (21614), 13857 states have internal predecessors, (21614), 2991 states have call successors, (2991), 798 states have call predecessors, (2991), 805 states have return successors, (4465), 2985 states have call predecessors, (4465), 2973 states have call successors, (4465) [2025-03-16 18:36:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17129 states to 17129 states and 29070 transitions. [2025-03-16 18:36:29,964 INFO L78 Accepts]: Start accepts. Automaton has 17129 states and 29070 transitions. Word has length 107 [2025-03-16 18:36:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:29,965 INFO L471 AbstractCegarLoop]: Abstraction has 17129 states and 29070 transitions. [2025-03-16 18:36:29,965 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, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-16 18:36:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 17129 states and 29070 transitions. [2025-03-16 18:36:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 18:36:29,969 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:29,969 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:29,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 18:36:29,970 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:29,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:29,970 INFO L85 PathProgramCache]: Analyzing trace with hash 581416198, now seen corresponding path program 1 times [2025-03-16 18:36:29,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:29,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141153077] [2025-03-16 18:36:29,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:29,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:29,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 18:36:29,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 18:36:29,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:29,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:30,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:30,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141153077] [2025-03-16 18:36:30,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141153077] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:30,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:30,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408020082] [2025-03-16 18:36:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:30,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:30,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:30,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:30,119 INFO L87 Difference]: Start difference. First operand 17129 states and 29070 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, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:31,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:31,581 INFO L93 Difference]: Finished difference Result 51481 states and 90862 transitions. [2025-03-16 18:36:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:31,582 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, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2025-03-16 18:36:31,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:31,797 INFO L225 Difference]: With dead ends: 51481 [2025-03-16 18:36:31,797 INFO L226 Difference]: Without dead ends: 34366 [2025-03-16 18:36:31,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:31,916 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 823 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 4329 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:31,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 4329 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:36:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34366 states. [2025-03-16 18:36:32,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34366 to 34201. [2025-03-16 18:36:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34201 states, 26631 states have (on average 1.61747587398145) internal successors, (43075), 27672 states have internal predecessors, (43075), 5948 states have call successors, (5948), 1590 states have call predecessors, (5948), 1621 states have return successors, (10787), 5962 states have call predecessors, (10787), 5914 states have call successors, (10787) [2025-03-16 18:36:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34201 states to 34201 states and 59810 transitions. [2025-03-16 18:36:33,353 INFO L78 Accepts]: Start accepts. Automaton has 34201 states and 59810 transitions. Word has length 116 [2025-03-16 18:36:33,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:33,355 INFO L471 AbstractCegarLoop]: Abstraction has 34201 states and 59810 transitions. [2025-03-16 18:36:33,355 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, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2025-03-16 18:36:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 34201 states and 59810 transitions. [2025-03-16 18:36:33,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-16 18:36:33,359 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:33,359 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:33,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-16 18:36:33,359 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:33,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:33,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1499766672, now seen corresponding path program 1 times [2025-03-16 18:36:33,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:33,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113113039] [2025-03-16 18:36:33,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:33,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 18:36:33,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 18:36:33,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:33,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:36:33,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:33,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113113039] [2025-03-16 18:36:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113113039] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865380510] [2025-03-16 18:36:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:33,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:33,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:33,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:33,433 INFO L87 Difference]: Start difference. First operand 34201 states and 59810 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:35,098 INFO L93 Difference]: Finished difference Result 68676 states and 123280 transitions. [2025-03-16 18:36:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:35,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 [2025-03-16 18:36:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:35,359 INFO L225 Difference]: With dead ends: 68676 [2025-03-16 18:36:35,359 INFO L226 Difference]: Without dead ends: 34489 [2025-03-16 18:36:35,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:35,825 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 11 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:35,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2450 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34489 states. [2025-03-16 18:36:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34489 to 34361. [2025-03-16 18:36:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34361 states, 26775 states have (on average 1.6147525676937442) internal successors, (43235), 27816 states have internal predecessors, (43235), 5948 states have call successors, (5948), 1622 states have call predecessors, (5948), 1637 states have return successors, (10731), 5946 states have call predecessors, (10731), 5914 states have call successors, (10731) [2025-03-16 18:36:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34361 states to 34361 states and 59914 transitions. [2025-03-16 18:36:37,154 INFO L78 Accepts]: Start accepts. Automaton has 34361 states and 59914 transitions. Word has length 117 [2025-03-16 18:36:37,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:37,154 INFO L471 AbstractCegarLoop]: Abstraction has 34361 states and 59914 transitions. [2025-03-16 18:36:37,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-16 18:36:37,155 INFO L276 IsEmpty]: Start isEmpty. Operand 34361 states and 59914 transitions. [2025-03-16 18:36:37,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-16 18:36:37,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:37,161 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:37,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:36:37,162 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:37,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:37,162 INFO L85 PathProgramCache]: Analyzing trace with hash 280185220, now seen corresponding path program 1 times [2025-03-16 18:36:37,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:37,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934230209] [2025-03-16 18:36:37,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:37,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:37,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-16 18:36:37,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-16 18:36:37,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:37,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:36:37,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:37,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934230209] [2025-03-16 18:36:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934230209] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:37,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:37,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652873700] [2025-03-16 18:36:37,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:37,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:37,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:37,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:37,277 INFO L87 Difference]: Start difference. First operand 34361 states and 59914 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:36:40,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:40,658 INFO L93 Difference]: Finished difference Result 103413 states and 191190 transitions. [2025-03-16 18:36:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:40,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (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 127 [2025-03-16 18:36:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:41,542 INFO L225 Difference]: With dead ends: 103413 [2025-03-16 18:36:41,542 INFO L226 Difference]: Without dead ends: 69066 [2025-03-16 18:36:41,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:41,853 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 819 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:41,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 4334 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:36:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69066 states. [2025-03-16 18:36:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69066 to 68773. [2025-03-16 18:36:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68773 states, 53598 states have (on average 1.611925818127542) internal successors, (86396), 55671 states have internal predecessors, (86396), 11873 states have call successors, (11873), 3238 states have call predecessors, (11873), 3301 states have return successors, (27105), 11911 states have call predecessors, (27105), 11807 states have call successors, (27105) [2025-03-16 18:36:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68773 states to 68773 states and 125374 transitions. [2025-03-16 18:36:44,658 INFO L78 Accepts]: Start accepts. Automaton has 68773 states and 125374 transitions. Word has length 127 [2025-03-16 18:36:44,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:44,659 INFO L471 AbstractCegarLoop]: Abstraction has 68773 states and 125374 transitions. [2025-03-16 18:36:44,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-16 18:36:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 68773 states and 125374 transitions. [2025-03-16 18:36:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-16 18:36:44,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:44,665 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:44,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-16 18:36:44,666 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:44,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1572723605, now seen corresponding path program 1 times [2025-03-16 18:36:44,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:44,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046905091] [2025-03-16 18:36:44,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:44,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:44,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-16 18:36:44,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-16 18:36:44,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:44,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:36:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046905091] [2025-03-16 18:36:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046905091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:44,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:44,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186365269] [2025-03-16 18:36:44,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:44,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:44,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:44,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:44,757 INFO L87 Difference]: Start difference. First operand 68773 states and 125374 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:36:49,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:49,277 INFO L93 Difference]: Finished difference Result 138172 states and 262189 transitions. [2025-03-16 18:36:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:49,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2025-03-16 18:36:49,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:49,889 INFO L225 Difference]: With dead ends: 138172 [2025-03-16 18:36:49,889 INFO L226 Difference]: Without dead ends: 69413 [2025-03-16 18:36:50,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:50,821 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 9 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2447 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:50,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2447 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69413 states. [2025-03-16 18:36:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69413 to 69157. [2025-03-16 18:36:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69157 states, 53950 states have (on average 1.6085264133456905) internal successors, (86780), 56023 states have internal predecessors, (86780), 11873 states have call successors, (11873), 3302 states have call predecessors, (11873), 3333 states have return successors, (27041), 11879 states have call predecessors, (27041), 11807 states have call successors, (27041) [2025-03-16 18:36:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69157 states to 69157 states and 125694 transitions. [2025-03-16 18:36:53,899 INFO L78 Accepts]: Start accepts. Automaton has 69157 states and 125694 transitions. Word has length 128 [2025-03-16 18:36:53,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:53,900 INFO L471 AbstractCegarLoop]: Abstraction has 69157 states and 125694 transitions. [2025-03-16 18:36:53,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-16 18:36:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 69157 states and 125694 transitions. [2025-03-16 18:36:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-16 18:36:53,910 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:53,910 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:53,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-16 18:36:53,910 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:53,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2099336450, now seen corresponding path program 1 times [2025-03-16 18:36:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006501941] [2025-03-16 18:36:53,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:53,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-16 18:36:53,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-16 18:36:53,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:53,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-03-16 18:36:54,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:54,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006501941] [2025-03-16 18:36:54,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006501941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:54,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:54,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 18:36:54,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114463763] [2025-03-16 18:36:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:54,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:54,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:54,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:54,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:54,049 INFO L87 Difference]: Start difference. First operand 69157 states and 125694 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 4 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16)