./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product19.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 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:13:51,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:13:52,009 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:13:52,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:13:52,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:13:52,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:13:52,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:13:52,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:13:52,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:13:52,029 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:13:52,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:13:52,030 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:13:52,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:13:52,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:13:52,030 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:13:52,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:13:52,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:13:52,030 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:13:52,031 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:13:52,032 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:13:52,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:13:52,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:13:52,032 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 -> 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d [2025-03-03 14:13:52,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:13:52,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:13:52,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:13:52,326 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:13:52,326 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:13:52,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2025-03-03 14:13:53,481 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c10aa9b/46594a45661b45f2bfd23ecd465099b0/FLAGd70e229a4 [2025-03-03 14:13:53,794 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:13:53,795 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2025-03-03 14:13:53,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c10aa9b/46594a45661b45f2bfd23ecd465099b0/FLAGd70e229a4 [2025-03-03 14:13:54,060 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c10aa9b/46594a45661b45f2bfd23ecd465099b0 [2025-03-03 14:13:54,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:13:54,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:13:54,064 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:13:54,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:13:54,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:13:54,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287c7052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54, skipping insertion in model container [2025-03-03 14:13:54,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:13:54,406 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_spec1_product19.cil.c[61467,61480] [2025-03-03 14:13:54,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:13:54,463 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:13:54,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2025-03-03 14:13:54,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [64] [2025-03-03 14:13:54,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [185] [2025-03-03 14:13:54,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [858] [2025-03-03 14:13:54,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1219] [2025-03-03 14:13:54,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [1254] [2025-03-03 14:13:54,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1441] [2025-03-03 14:13:54,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2965] [2025-03-03 14:13:54,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2974] [2025-03-03 14:13:54,472 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3065] [2025-03-03 14:13:54,545 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_spec1_product19.cil.c[61467,61480] [2025-03-03 14:13:54,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:13:54,589 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:13:54,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54 WrapperNode [2025-03-03 14:13:54,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:13:54,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:13:54,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:13:54,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:13:54,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,649 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1104 [2025-03-03 14:13:54,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:13:54,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:13:54,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:13:54,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:13:54,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,691 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:13:54,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,713 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:13:54,739 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:13:54,739 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:13:54,739 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:13:54,740 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (1/1) ... [2025-03-03 14:13:54,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:13:54,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:54,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:13:54,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:13:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-03 14:13:54,782 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-03 14:13:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:13:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:13:54,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:13:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-03 14:13:54,783 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-03 14:13:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-03-03 14:13:54,783 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-03-03 14:13:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:13:54,783 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:13:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:13:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:13:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:13:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:13:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:13:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:13:54,784 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:13:54,784 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:13:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:13:54,785 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:13:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-03 14:13:54,785 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-03 14:13:54,785 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:13:54,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:13:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:13:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:13:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:13:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:13:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:13:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:13:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:13:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:13:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:13:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:13:54,786 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:13:54,786 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:13:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:13:54,787 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:13:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:13:54,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:13:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:13:54,787 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:13:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:13:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:13:54,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:13:54,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:13:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:13:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:13:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:13:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:13:54,789 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:13:54,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:13:54,937 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:13:54,939 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:13:54,991 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L182: #res := ~retValue_acc~2; [2025-03-03 14:13:55,008 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L104: #res := ~retValue_acc~0; [2025-03-03 14:13:55,012 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1516: #res := ~retValue_acc~10; [2025-03-03 14:13:55,020 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1669: #res := ~retValue_acc~11; [2025-03-03 14:13:55,062 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2325: #res#1 := ~retValue_acc~21#1; [2025-03-03 14:13:55,063 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1712-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~13#1; [2025-03-03 14:13:55,088 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2953: #res := ~retValue_acc~25; [2025-03-03 14:13:55,348 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2235: #res#1 := ~retValue_acc~19#1; [2025-03-03 14:13:55,348 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2206-1: stopRequestedInDirection__wrappee__weight_#res#1 := stopRequestedInDirection__wrappee__weight_~retValue_acc~18#1; [2025-03-03 14:13:55,406 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2370: #res := ~retValue_acc~23; [2025-03-03 14:13:55,421 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L143: #res := ~retValue_acc~1; [2025-03-03 14:13:55,577 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2356-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~22#1; [2025-03-03 14:13:55,633 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1841-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~16#1; [2025-03-03 14:13:55,633 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1854-1: isIdle_#res#1 := isIdle_~retValue_acc~17#1; [2025-03-03 14:13:55,677 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L544: #res := ~retValue_acc~4; [2025-03-03 14:13:55,738 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1216-1: main_#res#1 := main_~retValue_acc~7#1; [2025-03-03 14:13:55,738 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1251-1: valid_product_#res#1 := valid_product_~retValue_acc~9#1; [2025-03-03 14:13:55,749 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L303: #res := ~retValue_acc~3; [2025-03-03 14:13:55,750 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1678: #res := ~retValue_acc~12; [2025-03-03 14:13:55,754 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L855: #res := ~retValue_acc~5; [2025-03-03 14:13:55,895 INFO L? ?]: Removed 449 outVars from TransFormulas that were not future-live. [2025-03-03 14:13:55,896 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:13:55,912 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:13:55,917 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:13:55,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:13:55 BoogieIcfgContainer [2025-03-03 14:13:55,919 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:13:55,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:13:55,921 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:13:55,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:13:55,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:13:54" (1/3) ... [2025-03-03 14:13:55,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1099d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:13:55, skipping insertion in model container [2025-03-03 14:13:55,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:13:54" (2/3) ... [2025-03-03 14:13:55,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1099d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:13:55, skipping insertion in model container [2025-03-03 14:13:55,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:13:55" (3/3) ... [2025-03-03 14:13:55,927 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2025-03-03 14:13:55,937 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:13:55,940 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product19.cil.c that has 26 procedures, 566 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:13:55,998 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:13:56,006 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;@5b6f00b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:13:56,007 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:13:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 566 states, 440 states have (on average 1.684090909090909) internal successors, (741), 461 states have internal predecessors, (741), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-03 14:13:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 14:13:56,028 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:56,028 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:56,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:56,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash -206713160, now seen corresponding path program 1 times [2025-03-03 14:13:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:56,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778942634] [2025-03-03 14:13:56,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:56,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:56,150 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:13:56,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:13:56,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:56,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778942634] [2025-03-03 14:13:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778942634] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880207465] [2025-03-03 14:13:56,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:56,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:56,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:56,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:56,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:13:56,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:13:56,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:13:56,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:56,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:56,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 14:13:56,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:13:57,006 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880207465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:57,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:57,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-03 14:13:57,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636414899] [2025-03-03 14:13:57,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:57,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:13:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:57,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:13:57,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:13:57,030 INFO L87 Difference]: Start difference. First operand has 566 states, 440 states have (on average 1.684090909090909) internal successors, (741), 461 states have internal predecessors, (741), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:13:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:57,082 INFO L93 Difference]: Finished difference Result 587 states and 969 transitions. [2025-03-03 14:13:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:13:57,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2025-03-03 14:13:57,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:57,104 INFO L225 Difference]: With dead ends: 587 [2025-03-03 14:13:57,104 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:13:57,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:13:57,112 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:57,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:13:57,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:13:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 434 states have (on average 1.6843317972350231) internal successors, (731), 453 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:13:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 924 transitions. [2025-03-03 14:13:57,189 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 924 transitions. Word has length 125 [2025-03-03 14:13:57,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:57,191 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 924 transitions. [2025-03-03 14:13:57,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:13:57,192 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 924 transitions. [2025-03-03 14:13:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 14:13:57,199 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:57,199 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:57,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 14:13:57,403 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,SelfDestructingSolverStorable0 [2025-03-03 14:13:57,403 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:57,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1599466347, now seen corresponding path program 1 times [2025-03-03 14:13:57,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:57,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902477543] [2025-03-03 14:13:57,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:57,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:57,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:13:57,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:13:57,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:57,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:57,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:57,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902477543] [2025-03-03 14:13:57,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902477543] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:57,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851427893] [2025-03-03 14:13:57,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:57,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:57,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:57,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:13:57,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:13:57,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:13:57,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:57,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:57,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:57,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:58,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:58,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851427893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:58,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:58,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:58,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944109308] [2025-03-03 14:13:58,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:58,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:58,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:58,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:58,021 INFO L87 Difference]: Start difference. First operand 558 states and 924 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:58,095 INFO L93 Difference]: Finished difference Result 1107 states and 1840 transitions. [2025-03-03 14:13:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:13:58,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2025-03-03 14:13:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:58,101 INFO L225 Difference]: With dead ends: 1107 [2025-03-03 14:13:58,102 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:13:58,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:58,108 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 5 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:58,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2730 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:58,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:13:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:13:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 434 states have (on average 1.6820276497695852) internal successors, (730), 453 states have internal predecessors, (730), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:13:58,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 923 transitions. [2025-03-03 14:13:58,144 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 923 transitions. Word has length 127 [2025-03-03 14:13:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:58,144 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 923 transitions. [2025-03-03 14:13:58,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 923 transitions. [2025-03-03 14:13:58,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-03-03 14:13:58,147 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:58,147 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:58,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:58,347 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,SelfDestructingSolverStorable1 [2025-03-03 14:13:58,348 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:58,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash 970694605, now seen corresponding path program 1 times [2025-03-03 14:13:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:58,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291156358] [2025-03-03 14:13:58,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:58,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-03 14:13:58,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-03 14:13:58,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:58,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:58,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:58,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291156358] [2025-03-03 14:13:58,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291156358] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:58,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302213071] [2025-03-03 14:13:58,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:58,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:58,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:58,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:58,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:13:58,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 129 statements into 1 equivalence classes. [2025-03-03 14:13:58,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 129 of 129 statements. [2025-03-03 14:13:58,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:58,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:58,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:58,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:58,836 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:58,836 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:58,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302213071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:58,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:58,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:58,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691464808] [2025-03-03 14:13:58,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:58,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:58,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:58,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:58,838 INFO L87 Difference]: Start difference. First operand 558 states and 923 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:58,881 INFO L93 Difference]: Finished difference Result 1107 states and 1838 transitions. [2025-03-03 14:13:58,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:13:58,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2025-03-03 14:13:58,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:58,884 INFO L225 Difference]: With dead ends: 1107 [2025-03-03 14:13:58,884 INFO L226 Difference]: Without dead ends: 558 [2025-03-03 14:13:58,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:58,887 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 4 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:58,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2730 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:58,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2025-03-03 14:13:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2025-03-03 14:13:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 434 states have (on average 1.6797235023041475) internal successors, (729), 453 states have internal predecessors, (729), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:13:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 922 transitions. [2025-03-03 14:13:58,911 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 922 transitions. Word has length 129 [2025-03-03 14:13:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:58,912 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 922 transitions. [2025-03-03 14:13:58,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 922 transitions. [2025-03-03 14:13:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 14:13:58,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:58,917 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:58,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:59,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:59,117 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:59,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash -174254539, now seen corresponding path program 1 times [2025-03-03 14:13:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301669556] [2025-03-03 14:13:59,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:59,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:13:59,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:13:59,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:59,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:59,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301669556] [2025-03-03 14:13:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301669556] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462004113] [2025-03-03 14:13:59,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:59,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:59,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:59,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:13:59,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:13:59,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:13:59,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:13:59,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:59,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:59,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:13:59,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:13:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:13:59,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:13:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462004113] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:13:59,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:13:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:13:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339717597] [2025-03-03 14:13:59,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:13:59,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:13:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:13:59,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:13:59,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:13:59,548 INFO L87 Difference]: Start difference. First operand 558 states and 922 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:13:59,605 INFO L93 Difference]: Finished difference Result 1114 states and 1845 transitions. [2025-03-03 14:13:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:13:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2025-03-03 14:13:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:13:59,609 INFO L225 Difference]: With dead ends: 1114 [2025-03-03 14:13:59,609 INFO L226 Difference]: Without dead ends: 567 [2025-03-03 14:13:59,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:13:59,611 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 13 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:13:59,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2727 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:13:59,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-03-03 14:13:59,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2025-03-03 14:13:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 461 states have internal predecessors, (741), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:13:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 934 transitions. [2025-03-03 14:13:59,629 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 934 transitions. Word has length 131 [2025-03-03 14:13:59,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:13:59,629 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 934 transitions. [2025-03-03 14:13:59,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:13:59,629 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 934 transitions. [2025-03-03 14:13:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-03 14:13:59,631 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:13:59,631 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:13:59,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 14:13:59,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:59,836 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:13:59,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:13:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1781924530, now seen corresponding path program 1 times [2025-03-03 14:13:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:13:59,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626734148] [2025-03-03 14:13:59,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:59,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:13:59,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-03 14:13:59,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-03 14:13:59,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:13:59,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:13:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:13:59,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:13:59,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626734148] [2025-03-03 14:13:59,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626734148] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:13:59,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593244997] [2025-03-03 14:13:59,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:13:59,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:13:59,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:13:59,936 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) [2025-03-03 14:13:59,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 14:14:00,055 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-03 14:14:00,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-03 14:14:00,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:00,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:00,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:00,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:14:00,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:00,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593244997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:00,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:00,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:00,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149004142] [2025-03-03 14:14:00,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:00,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:00,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:00,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:00,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:00,231 INFO L87 Difference]: Start difference. First operand 567 states and 934 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:00,285 INFO L93 Difference]: Finished difference Result 1116 states and 1846 transitions. [2025-03-03 14:14:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2025-03-03 14:14:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:00,289 INFO L225 Difference]: With dead ends: 1116 [2025-03-03 14:14:00,290 INFO L226 Difference]: Without dead ends: 567 [2025-03-03 14:14:00,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:00,293 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 11 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:00,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2727 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:00,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-03-03 14:14:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2025-03-03 14:14:00,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 442 states have (on average 1.6742081447963801) internal successors, (740), 461 states have internal predecessors, (740), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:14:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 933 transitions. [2025-03-03 14:14:00,311 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 933 transitions. Word has length 132 [2025-03-03 14:14:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:00,311 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 933 transitions. [2025-03-03 14:14:00,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 933 transitions. [2025-03-03 14:14:00,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-03 14:14:00,313 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:00,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:00,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:00,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:00,514 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:00,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:00,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1127924248, now seen corresponding path program 1 times [2025-03-03 14:14:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:00,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534168160] [2025-03-03 14:14:00,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:00,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:00,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:14:00,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:14:00,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:00,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:14:00,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:00,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534168160] [2025-03-03 14:14:00,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534168160] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:00,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74431134] [2025-03-03 14:14:00,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:00,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:00,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:00,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:00,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 14:14:00,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-03 14:14:00,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-03 14:14:00,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:00,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:00,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:00,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:14:00,921 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:00,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74431134] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:00,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:00,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75824256] [2025-03-03 14:14:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:00,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:00,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:00,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:00,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:00,922 INFO L87 Difference]: Start difference. First operand 567 states and 933 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, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:00,974 INFO L93 Difference]: Finished difference Result 1116 states and 1845 transitions. [2025-03-03 14:14:00,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:00,974 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, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2025-03-03 14:14:00,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:00,978 INFO L225 Difference]: With dead ends: 1116 [2025-03-03 14:14:00,978 INFO L226 Difference]: Without dead ends: 567 [2025-03-03 14:14:00,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:00,981 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 10 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:00,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2727 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-03-03 14:14:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2025-03-03 14:14:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 442 states have (on average 1.6719457013574661) internal successors, (739), 461 states have internal predecessors, (739), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:14:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 932 transitions. [2025-03-03 14:14:00,999 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 932 transitions. Word has length 133 [2025-03-03 14:14:00,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:00,999 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 932 transitions. [2025-03-03 14:14:00,999 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, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 932 transitions. [2025-03-03 14:14:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-03 14:14:01,002 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:01,002 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:01,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 14:14:01,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:01,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:01,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1162742709, now seen corresponding path program 1 times [2025-03-03 14:14:01,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:01,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219937455] [2025-03-03 14:14:01,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:01,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-03 14:14:01,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 14:14:01,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:01,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219937455] [2025-03-03 14:14:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219937455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192528052] [2025-03-03 14:14:01,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:01,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:01,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:01,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:01,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 14:14:01,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-03 14:14:01,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 14:14:01,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:01,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:01,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:01,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:14:01,669 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:01,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192528052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:01,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:01,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:14:01,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207378178] [2025-03-03 14:14:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:01,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:01,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:01,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:01,671 INFO L87 Difference]: Start difference. First operand 567 states and 932 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:01,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:01,775 INFO L93 Difference]: Finished difference Result 1142 states and 1892 transitions. [2025-03-03 14:14:01,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:01,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2025-03-03 14:14:01,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:01,779 INFO L225 Difference]: With dead ends: 1142 [2025-03-03 14:14:01,779 INFO L226 Difference]: Without dead ends: 582 [2025-03-03 14:14:01,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:01,782 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 76 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:01,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2618 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2025-03-03 14:14:01,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2025-03-03 14:14:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 442 states have (on average 1.660633484162896) internal successors, (734), 461 states have internal predecessors, (734), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:14:01,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 927 transitions. [2025-03-03 14:14:01,799 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 927 transitions. Word has length 134 [2025-03-03 14:14:01,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:01,799 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 927 transitions. [2025-03-03 14:14:01,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 927 transitions. [2025-03-03 14:14:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:14:01,802 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:01,802 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:01,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:02,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:02,004 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:02,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1230438837, now seen corresponding path program 1 times [2025-03-03 14:14:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023601222] [2025-03-03 14:14:02,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:02,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:14:02,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:14:02,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:02,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:02,206 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:02,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023601222] [2025-03-03 14:14:02,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023601222] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:02,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452493107] [2025-03-03 14:14:02,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:02,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:02,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:02,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:02,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 14:14:02,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:14:02,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:14:02,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:02,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:02,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:02,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:14:02,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:02,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452493107] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:02,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:02,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:14:02,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232419336] [2025-03-03 14:14:02,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:02,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:02,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:02,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:02,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:02,532 INFO L87 Difference]: Start difference. First operand 567 states and 927 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:02,629 INFO L93 Difference]: Finished difference Result 1142 states and 1882 transitions. [2025-03-03 14:14:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:02,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2025-03-03 14:14:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:02,636 INFO L225 Difference]: With dead ends: 1142 [2025-03-03 14:14:02,636 INFO L226 Difference]: Without dead ends: 582 [2025-03-03 14:14:02,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:02,639 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 75 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:02,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2618 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2025-03-03 14:14:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 567. [2025-03-03 14:14:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 442 states have (on average 1.6493212669683257) internal successors, (729), 461 states have internal predecessors, (729), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:14:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 922 transitions. [2025-03-03 14:14:02,656 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 922 transitions. Word has length 136 [2025-03-03 14:14:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:02,656 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 922 transitions. [2025-03-03 14:14:02,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 922 transitions. [2025-03-03 14:14:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-03 14:14:02,661 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:02,661 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:02,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 14:14:02,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-03 14:14:02,863 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:02,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1902147093, now seen corresponding path program 1 times [2025-03-03 14:14:02,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22462991] [2025-03-03 14:14:02,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:02,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:02,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-03 14:14:02,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-03 14:14:02,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:02,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:03,035 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:03,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:03,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22462991] [2025-03-03 14:14:03,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22462991] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:03,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237582186] [2025-03-03 14:14:03,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:03,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:03,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:03,038 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:03,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 14:14:03,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-03 14:14:03,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-03 14:14:03,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:03,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:03,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:03,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:14:03,356 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:03,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237582186] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:03,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:03,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:14:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742884438] [2025-03-03 14:14:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:03,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:03,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:03,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:03,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:03,358 INFO L87 Difference]: Start difference. First operand 567 states and 922 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:03,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:03,503 INFO L93 Difference]: Finished difference Result 1193 states and 1955 transitions. [2025-03-03 14:14:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:03,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2025-03-03 14:14:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:03,507 INFO L225 Difference]: With dead ends: 1193 [2025-03-03 14:14:03,507 INFO L226 Difference]: Without dead ends: 648 [2025-03-03 14:14:03,509 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:03,511 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 130 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:03,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2649 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-03-03 14:14:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 618. [2025-03-03 14:14:03,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 492 states have (on average 1.6544715447154472) internal successors, (814), 511 states have internal predecessors, (814), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:14:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1007 transitions. [2025-03-03 14:14:03,528 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1007 transitions. Word has length 138 [2025-03-03 14:14:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:03,528 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1007 transitions. [2025-03-03 14:14:03,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:03,529 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1007 transitions. [2025-03-03 14:14:03,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:14:03,532 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:03,532 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:03,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:03,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:03,733 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:03,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2130755719, now seen corresponding path program 1 times [2025-03-03 14:14:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805570978] [2025-03-03 14:14:03,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:03,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:03,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:14:03,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:14:03,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:03,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805570978] [2025-03-03 14:14:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805570978] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690308910] [2025-03-03 14:14:03,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:03,905 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:03,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 14:14:04,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:14:04,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:14:04,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:04,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:04,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:04,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:14:04,198 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690308910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:04,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:04,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:14:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915273069] [2025-03-03 14:14:04,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:04,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:04,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:04,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:04,200 INFO L87 Difference]: Start difference. First operand 618 states and 1007 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:04,346 INFO L93 Difference]: Finished difference Result 1208 states and 1979 transitions. [2025-03-03 14:14:04,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:04,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2025-03-03 14:14:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:04,350 INFO L225 Difference]: With dead ends: 1208 [2025-03-03 14:14:04,350 INFO L226 Difference]: Without dead ends: 648 [2025-03-03 14:14:04,352 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:04,352 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 124 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2622 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:04,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2622 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2025-03-03 14:14:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 618. [2025-03-03 14:14:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 492 states have (on average 1.6443089430894309) internal successors, (809), 511 states have internal predecessors, (809), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:14:04,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1002 transitions. [2025-03-03 14:14:04,374 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1002 transitions. Word has length 139 [2025-03-03 14:14:04,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:04,374 INFO L471 AbstractCegarLoop]: Abstraction has 618 states and 1002 transitions. [2025-03-03 14:14:04,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:04,374 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1002 transitions. [2025-03-03 14:14:04,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:14:04,377 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:04,377 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:04,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:04,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 14:14:04,581 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:04,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash -436578955, now seen corresponding path program 1 times [2025-03-03 14:14:04,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870291260] [2025-03-03 14:14:04,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:04,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:04,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:14:04,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:14:04,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:04,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:04,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870291260] [2025-03-03 14:14:04,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870291260] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076342453] [2025-03-03 14:14:04,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:04,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:04,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:04,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:04,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 14:14:04,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:14:04,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:14:04,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:04,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:04,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:04,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:14:05,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:05,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076342453] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:05,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:05,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:14:05,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133990287] [2025-03-03 14:14:05,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:05,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:05,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:05,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:05,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:05,031 INFO L87 Difference]: Start difference. First operand 618 states and 1002 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:05,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:05,146 INFO L93 Difference]: Finished difference Result 1201 states and 1959 transitions. [2025-03-03 14:14:05,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:05,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2025-03-03 14:14:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:05,152 INFO L225 Difference]: With dead ends: 1201 [2025-03-03 14:14:05,152 INFO L226 Difference]: Without dead ends: 656 [2025-03-03 14:14:05,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:14:05,154 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 113 mSDsluCounter, 5263 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6155 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:05,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6155 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:05,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2025-03-03 14:14:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 637. [2025-03-03 14:14:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 508 states have (on average 1.6437007874015748) internal successors, (835), 529 states have internal predecessors, (835), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (97), 93 states have call predecessors, (97), 95 states have call successors, (97) [2025-03-03 14:14:05,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1032 transitions. [2025-03-03 14:14:05,172 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1032 transitions. Word has length 139 [2025-03-03 14:14:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:05,173 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1032 transitions. [2025-03-03 14:14:05,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1032 transitions. [2025-03-03 14:14:05,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:14:05,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:05,176 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:05,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-03 14:14:05,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 14:14:05,376 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:05,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash 685700244, now seen corresponding path program 1 times [2025-03-03 14:14:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:05,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335112677] [2025-03-03 14:14:05,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:05,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:05,390 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:14:05,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:14:05,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:05,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:14:05,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:05,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335112677] [2025-03-03 14:14:05,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335112677] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:05,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856607976] [2025-03-03 14:14:05,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:05,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:05,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:05,443 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:05,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-03 14:14:05,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:14:05,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:14:05,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:05,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:05,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:05,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:05,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856607976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:05,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:05,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:14:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232019084] [2025-03-03 14:14:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:05,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:05,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:05,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:05,756 INFO L87 Difference]: Start difference. First operand 637 states and 1032 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:05,826 INFO L93 Difference]: Finished difference Result 1139 states and 1859 transitions. [2025-03-03 14:14:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:05,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2025-03-03 14:14:05,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:05,830 INFO L225 Difference]: With dead ends: 1139 [2025-03-03 14:14:05,830 INFO L226 Difference]: Without dead ends: 661 [2025-03-03 14:14:05,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:05,832 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 86 mSDsluCounter, 4446 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5351 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:05,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5351 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-03-03 14:14:05,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 656. [2025-03-03 14:14:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 524 states have (on average 1.6431297709923665) internal successors, (861), 547 states have internal predecessors, (861), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-03 14:14:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1062 transitions. [2025-03-03 14:14:05,848 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1062 transitions. Word has length 139 [2025-03-03 14:14:05,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:05,848 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1062 transitions. [2025-03-03 14:14:05,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:05,848 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1062 transitions. [2025-03-03 14:14:05,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:14:05,850 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:05,851 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:05,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-03 14:14:06,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 14:14:06,055 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:06,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash 250713291, now seen corresponding path program 1 times [2025-03-03 14:14:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380677805] [2025-03-03 14:14:06,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:06,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:14:06,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:14:06,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:06,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:14:06,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:06,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380677805] [2025-03-03 14:14:06,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380677805] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:06,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945480990] [2025-03-03 14:14:06,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:06,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:06,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:06,118 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:06,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-03 14:14:06,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:14:06,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:14:06,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:06,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:06,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:06,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:14:06,390 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:06,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945480990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:06,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:06,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361813509] [2025-03-03 14:14:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:06,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:06,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:06,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:06,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:06,391 INFO L87 Difference]: Start difference. First operand 656 states and 1062 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:06,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:06,441 INFO L93 Difference]: Finished difference Result 1206 states and 1969 transitions. [2025-03-03 14:14:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:06,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2025-03-03 14:14:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:06,446 INFO L225 Difference]: With dead ends: 1206 [2025-03-03 14:14:06,446 INFO L226 Difference]: Without dead ends: 656 [2025-03-03 14:14:06,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:06,448 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 13 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:06,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2696 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:06,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2025-03-03 14:14:06,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2025-03-03 14:14:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 524 states have (on average 1.6354961832061068) internal successors, (857), 547 states have internal predecessors, (857), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-03 14:14:06,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1058 transitions. [2025-03-03 14:14:06,465 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1058 transitions. Word has length 140 [2025-03-03 14:14:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:06,466 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1058 transitions. [2025-03-03 14:14:06,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-03 14:14:06,466 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1058 transitions. [2025-03-03 14:14:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:14:06,468 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:06,468 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:06,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-03 14:14:06,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 14:14:06,669 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:06,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2143491989, now seen corresponding path program 1 times [2025-03-03 14:14:06,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:06,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038726332] [2025-03-03 14:14:06,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:06,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:14:06,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:14:06,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:06,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:14:06,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:06,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038726332] [2025-03-03 14:14:06,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038726332] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:06,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985329060] [2025-03-03 14:14:06,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:06,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:06,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:06,737 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:06,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-03 14:14:06,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:14:06,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:14:06,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:06,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:06,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:07,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:07,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:07,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985329060] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:07,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:07,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:14:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940233136] [2025-03-03 14:14:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:07,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:07,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:07,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:07,053 INFO L87 Difference]: Start difference. First operand 656 states and 1058 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:07,119 INFO L93 Difference]: Finished difference Result 1169 states and 1906 transitions. [2025-03-03 14:14:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2025-03-03 14:14:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:07,124 INFO L225 Difference]: With dead ends: 1169 [2025-03-03 14:14:07,124 INFO L226 Difference]: Without dead ends: 691 [2025-03-03 14:14:07,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:07,127 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 95 mSDsluCounter, 4413 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:07,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5312 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2025-03-03 14:14:07,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 656. [2025-03-03 14:14:07,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 524 states have (on average 1.6354961832061068) internal successors, (857), 547 states have internal predecessors, (857), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-03 14:14:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1058 transitions. [2025-03-03 14:14:07,145 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1058 transitions. Word has length 140 [2025-03-03 14:14:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:07,145 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1058 transitions. [2025-03-03 14:14:07,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:07,145 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1058 transitions. [2025-03-03 14:14:07,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:14:07,147 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:07,147 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:07,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:07,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:07,348 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:07,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:07,348 INFO L85 PathProgramCache]: Analyzing trace with hash -27453052, now seen corresponding path program 1 times [2025-03-03 14:14:07,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887417776] [2025-03-03 14:14:07,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:07,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:14:07,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:14:07,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:07,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:07,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:07,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887417776] [2025-03-03 14:14:07,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887417776] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:07,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972760965] [2025-03-03 14:14:07,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:07,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:07,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:07,415 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:07,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-03 14:14:07,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:14:07,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:14:07,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:07,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:07,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:07,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:07,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:07,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972760965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:07,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:14:07,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791154367] [2025-03-03 14:14:07,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:07,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:07,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:07,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:07,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:07,725 INFO L87 Difference]: Start difference. First operand 656 states and 1058 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:07,824 INFO L93 Difference]: Finished difference Result 1154 states and 1880 transitions. [2025-03-03 14:14:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2025-03-03 14:14:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:07,828 INFO L225 Difference]: With dead ends: 1154 [2025-03-03 14:14:07,828 INFO L226 Difference]: Without dead ends: 676 [2025-03-03 14:14:07,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:07,830 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 113 mSDsluCounter, 5241 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6129 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:07,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6129 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2025-03-03 14:14:07,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 656. [2025-03-03 14:14:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 524 states have (on average 1.6354961832061068) internal successors, (857), 547 states have internal predecessors, (857), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-03 14:14:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1058 transitions. [2025-03-03 14:14:07,846 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1058 transitions. Word has length 140 [2025-03-03 14:14:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:07,846 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1058 transitions. [2025-03-03 14:14:07,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1058 transitions. [2025-03-03 14:14:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-03 14:14:07,849 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:07,849 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:07,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:08,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 14:14:08,050 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:08,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash -938857187, now seen corresponding path program 1 times [2025-03-03 14:14:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:08,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549305633] [2025-03-03 14:14:08,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:08,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:08,060 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-03 14:14:08,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-03 14:14:08,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:08,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:08,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549305633] [2025-03-03 14:14:08,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549305633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191959152] [2025-03-03 14:14:08,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:08,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:08,147 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:08,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-03 14:14:08,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-03 14:14:08,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-03 14:14:08,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:08,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:08,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:08,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:14:08,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:08,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191959152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:08,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:08,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:14:08,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145895134] [2025-03-03 14:14:08,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:08,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:08,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:08,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:08,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:08,460 INFO L87 Difference]: Start difference. First operand 656 states and 1058 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:08,559 INFO L93 Difference]: Finished difference Result 1154 states and 1881 transitions. [2025-03-03 14:14:08,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2025-03-03 14:14:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:08,563 INFO L225 Difference]: With dead ends: 1154 [2025-03-03 14:14:08,564 INFO L226 Difference]: Without dead ends: 676 [2025-03-03 14:14:08,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:08,566 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 121 mSDsluCounter, 5231 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6119 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:08,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6119 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:08,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2025-03-03 14:14:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 656. [2025-03-03 14:14:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 524 states have (on average 1.6354961832061068) internal successors, (857), 547 states have internal predecessors, (857), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-03 14:14:08,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1058 transitions. [2025-03-03 14:14:08,583 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1058 transitions. Word has length 141 [2025-03-03 14:14:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:08,583 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 1058 transitions. [2025-03-03 14:14:08,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:14:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1058 transitions. [2025-03-03 14:14:08,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-03-03 14:14:08,586 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:08,586 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:08,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:08,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-03 14:14:08,786 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:08,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash 455052615, now seen corresponding path program 1 times [2025-03-03 14:14:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:08,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627866529] [2025-03-03 14:14:08,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:08,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:08,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:14:08,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:14:08,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:08,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:14:08,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:08,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627866529] [2025-03-03 14:14:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627866529] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:08,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507777098] [2025-03-03 14:14:08,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:08,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:08,852 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:08,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-03 14:14:08,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-03 14:14:09,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-03 14:14:09,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:09,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:09,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:09,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:09,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:09,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507777098] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:09,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:09,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:09,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30573234] [2025-03-03 14:14:09,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:09,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:09,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:09,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:09,204 INFO L87 Difference]: Start difference. First operand 656 states and 1058 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:09,576 INFO L93 Difference]: Finished difference Result 1137 states and 1875 transitions. [2025-03-03 14:14:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:09,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2025-03-03 14:14:09,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:09,580 INFO L225 Difference]: With dead ends: 1137 [2025-03-03 14:14:09,580 INFO L226 Difference]: Without dead ends: 664 [2025-03-03 14:14:09,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:09,582 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 862 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:09,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 2296 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:09,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2025-03-03 14:14:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2025-03-03 14:14:09,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 531 states have (on average 1.6365348399246704) internal successors, (869), 554 states have internal predecessors, (869), 101 states have call successors, (101), 28 states have call predecessors, (101), 31 states have return successors, (101), 94 states have call predecessors, (101), 96 states have call successors, (101) [2025-03-03 14:14:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1071 transitions. [2025-03-03 14:14:09,596 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1071 transitions. Word has length 142 [2025-03-03 14:14:09,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:09,597 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1071 transitions. [2025-03-03 14:14:09,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1071 transitions. [2025-03-03 14:14:09,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2025-03-03 14:14:09,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:09,599 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:09,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-03 14:14:09,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-03 14:14:09,800 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:09,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:09,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1303194461, now seen corresponding path program 1 times [2025-03-03 14:14:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:09,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379122877] [2025-03-03 14:14:09,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:09,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-03 14:14:09,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-03 14:14:09,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:09,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:14:09,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379122877] [2025-03-03 14:14:09,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379122877] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:09,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515610846] [2025-03-03 14:14:09,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:09,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:09,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:09,862 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:09,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-03 14:14:10,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 144 statements into 1 equivalence classes. [2025-03-03 14:14:10,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 144 of 144 statements. [2025-03-03 14:14:10,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:10,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:10,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:10,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:10,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:10,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515610846] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:10,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:10,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:10,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78734431] [2025-03-03 14:14:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:10,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:10,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:10,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:10,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:10,230 INFO L87 Difference]: Start difference. First operand 664 states and 1071 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:10,570 INFO L93 Difference]: Finished difference Result 1153 states and 1898 transitions. [2025-03-03 14:14:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:10,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2025-03-03 14:14:10,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:10,574 INFO L225 Difference]: With dead ends: 1153 [2025-03-03 14:14:10,574 INFO L226 Difference]: Without dead ends: 672 [2025-03-03 14:14:10,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:10,576 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 856 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:10,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2293 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2025-03-03 14:14:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2025-03-03 14:14:10,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 538 states have (on average 1.637546468401487) internal successors, (881), 561 states have internal predecessors, (881), 101 states have call successors, (101), 29 states have call predecessors, (101), 32 states have return successors, (102), 94 states have call predecessors, (102), 96 states have call successors, (102) [2025-03-03 14:14:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1084 transitions. [2025-03-03 14:14:10,590 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1084 transitions. Word has length 144 [2025-03-03 14:14:10,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:10,590 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 1084 transitions. [2025-03-03 14:14:10,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1084 transitions. [2025-03-03 14:14:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-03-03 14:14:10,593 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:10,593 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:10,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:10,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-03 14:14:10,793 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:10,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash -937295769, now seen corresponding path program 1 times [2025-03-03 14:14:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:10,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440959893] [2025-03-03 14:14:10,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:10,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-03 14:14:10,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-03 14:14:10,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:10,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:10,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440959893] [2025-03-03 14:14:10,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440959893] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:10,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44282345] [2025-03-03 14:14:10,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:10,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:10,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:10,861 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:10,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-03 14:14:10,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-03-03 14:14:11,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-03-03 14:14:11,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:11,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:11,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:11,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:11,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44282345] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:11,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:11,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587356007] [2025-03-03 14:14:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:11,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:11,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:11,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:11,193 INFO L87 Difference]: Start difference. First operand 672 states and 1084 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:11,519 INFO L93 Difference]: Finished difference Result 1169 states and 1921 transitions. [2025-03-03 14:14:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2025-03-03 14:14:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:11,523 INFO L225 Difference]: With dead ends: 1169 [2025-03-03 14:14:11,523 INFO L226 Difference]: Without dead ends: 680 [2025-03-03 14:14:11,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:11,525 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 837 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:11,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2290 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2025-03-03 14:14:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2025-03-03 14:14:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 545 states have (on average 1.6385321100917432) internal successors, (893), 568 states have internal predecessors, (893), 101 states have call successors, (101), 30 states have call predecessors, (101), 33 states have return successors, (103), 94 states have call predecessors, (103), 96 states have call successors, (103) [2025-03-03 14:14:11,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1097 transitions. [2025-03-03 14:14:11,540 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1097 transitions. Word has length 146 [2025-03-03 14:14:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:11,541 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1097 transitions. [2025-03-03 14:14:11,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1097 transitions. [2025-03-03 14:14:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-03 14:14:11,544 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:11,544 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:11,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-03 14:14:11,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:11,744 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:11,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1678320291, now seen corresponding path program 1 times [2025-03-03 14:14:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:11,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142838017] [2025-03-03 14:14:11,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:11,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:11,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:14:11,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:14:11,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:11,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:14:11,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:11,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142838017] [2025-03-03 14:14:11,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142838017] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:11,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731323701] [2025-03-03 14:14:11,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:11,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:11,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:11,821 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:11,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-03 14:14:11,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:14:12,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:14:12,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:12,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:12,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:12,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:12,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:12,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731323701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:12,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:12,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:12,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869612902] [2025-03-03 14:14:12,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:12,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:12,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:12,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:12,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:12,158 INFO L87 Difference]: Start difference. First operand 680 states and 1097 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:12,442 INFO L93 Difference]: Finished difference Result 1185 states and 1944 transitions. [2025-03-03 14:14:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:12,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2025-03-03 14:14:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:12,446 INFO L225 Difference]: With dead ends: 1185 [2025-03-03 14:14:12,446 INFO L226 Difference]: Without dead ends: 688 [2025-03-03 14:14:12,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:12,448 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 843 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:12,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2287 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2025-03-03 14:14:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2025-03-03 14:14:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 552 states have (on average 1.6394927536231885) internal successors, (905), 575 states have internal predecessors, (905), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-03 14:14:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1110 transitions. [2025-03-03 14:14:12,462 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1110 transitions. Word has length 148 [2025-03-03 14:14:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:12,462 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1110 transitions. [2025-03-03 14:14:12,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1110 transitions. [2025-03-03 14:14:12,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-03 14:14:12,465 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:12,465 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:12,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:12,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:12,665 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:12,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:12,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1361319417, now seen corresponding path program 1 times [2025-03-03 14:14:12,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:12,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388594364] [2025-03-03 14:14:12,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:12,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:12,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-03 14:14:12,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-03 14:14:12,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:12,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:12,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:12,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388594364] [2025-03-03 14:14:12,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388594364] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:12,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325733201] [2025-03-03 14:14:12,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:12,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:12,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:12,737 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:12,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-03 14:14:12,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-03 14:14:12,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-03 14:14:12,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:12,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:13,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:13,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:13,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:13,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325733201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:13,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:13,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802671240] [2025-03-03 14:14:13,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:13,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:13,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:13,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:13,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:13,125 INFO L87 Difference]: Start difference. First operand 688 states and 1110 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:14:13,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:13,405 INFO L93 Difference]: Finished difference Result 736 states and 1181 transitions. [2025-03-03 14:14:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:13,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 150 [2025-03-03 14:14:13,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:13,410 INFO L225 Difference]: With dead ends: 736 [2025-03-03 14:14:13,411 INFO L226 Difference]: Without dead ends: 721 [2025-03-03 14:14:13,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:13,412 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 833 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:13,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2320 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2025-03-03 14:14:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 691. [2025-03-03 14:14:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 555 states have (on average 1.636036036036036) internal successors, (908), 578 states have internal predecessors, (908), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-03 14:14:13,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1113 transitions. [2025-03-03 14:14:13,428 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1113 transitions. Word has length 150 [2025-03-03 14:14:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:13,428 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1113 transitions. [2025-03-03 14:14:13,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:14:13,429 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1113 transitions. [2025-03-03 14:14:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:14:13,431 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:13,431 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:13,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-03 14:14:13,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:13,632 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:13,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1241520517, now seen corresponding path program 1 times [2025-03-03 14:14:13,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:13,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803030483] [2025-03-03 14:14:13,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:13,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:14:13,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:14:13,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:13,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:13,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:13,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803030483] [2025-03-03 14:14:13,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803030483] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:13,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375982310] [2025-03-03 14:14:13,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:13,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:13,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:13,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:13,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-03 14:14:13,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:14:13,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:14:13,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:13,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:13,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 1895 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:14,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:14,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:14,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375982310] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:14,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:14,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-03 14:14:14,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565150817] [2025-03-03 14:14:14,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:14,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:14,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:14,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:14,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:14,021 INFO L87 Difference]: Start difference. First operand 691 states and 1113 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-03 14:14:14,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:14,036 INFO L93 Difference]: Finished difference Result 706 states and 1131 transitions. [2025-03-03 14:14:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:14,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2025-03-03 14:14:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:14,044 INFO L225 Difference]: With dead ends: 706 [2025-03-03 14:14:14,044 INFO L226 Difference]: Without dead ends: 691 [2025-03-03 14:14:14,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:14,046 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 0 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:14,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3624 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2025-03-03 14:14:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2025-03-03 14:14:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 555 states have (on average 1.6342342342342342) internal successors, (907), 578 states have internal predecessors, (907), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-03 14:14:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1112 transitions. [2025-03-03 14:14:14,065 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1112 transitions. Word has length 156 [2025-03-03 14:14:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:14,066 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1112 transitions. [2025-03-03 14:14:14,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-03 14:14:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1112 transitions. [2025-03-03 14:14:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-03 14:14:14,068 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:14,068 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:14,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:14,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:14,269 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:14,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:14,270 INFO L85 PathProgramCache]: Analyzing trace with hash 717901344, now seen corresponding path program 1 times [2025-03-03 14:14:14,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:14,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029532491] [2025-03-03 14:14:14,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:14,282 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 14:14:14,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 14:14:14,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:14,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:14,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029532491] [2025-03-03 14:14:14,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029532491] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:14,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094766942] [2025-03-03 14:14:14,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:14,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:14,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:14,355 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:14,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-03 14:14:14,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-03 14:14:14,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-03 14:14:14,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:14,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:14,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:14,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-03 14:14:14,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094766942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:14,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:14,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-03 14:14:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877540097] [2025-03-03 14:14:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:14,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:14,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:14,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:14,636 INFO L87 Difference]: Start difference. First operand 691 states and 1112 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:14,671 INFO L93 Difference]: Finished difference Result 1356 states and 2194 transitions. [2025-03-03 14:14:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:14,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2025-03-03 14:14:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:14,674 INFO L225 Difference]: With dead ends: 1356 [2025-03-03 14:14:14,674 INFO L226 Difference]: Without dead ends: 666 [2025-03-03 14:14:14,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:14:14,680 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 7 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:14,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2696 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2025-03-03 14:14:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2025-03-03 14:14:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 533 states have (on average 1.6303939962476548) internal successors, (869), 554 states have internal predecessors, (869), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-03 14:14:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1070 transitions. [2025-03-03 14:14:14,694 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1070 transitions. Word has length 166 [2025-03-03 14:14:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:14,694 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1070 transitions. [2025-03-03 14:14:14,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1070 transitions. [2025-03-03 14:14:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 14:14:14,696 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:14,696 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:14,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-03 14:14:14,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:14,896 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:14,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:14,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1174147080, now seen corresponding path program 1 times [2025-03-03 14:14:14,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:14,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468411060] [2025-03-03 14:14:14,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:14,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:14,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 14:14:14,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 14:14:14,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:14,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:14:15,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:15,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468411060] [2025-03-03 14:14:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468411060] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:15,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257447145] [2025-03-03 14:14:15,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:15,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:15,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:15,035 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:15,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-03 14:14:15,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 14:14:15,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 14:14:15,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:15,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:15,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:15,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-03 14:14:15,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:15,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257447145] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:15,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:15,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279494062] [2025-03-03 14:14:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:15,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:15,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:15,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:15,350 INFO L87 Difference]: Start difference. First operand 666 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:15,395 INFO L93 Difference]: Finished difference Result 1286 states and 2087 transitions. [2025-03-03 14:14:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2025-03-03 14:14:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:15,398 INFO L225 Difference]: With dead ends: 1286 [2025-03-03 14:14:15,398 INFO L226 Difference]: Without dead ends: 684 [2025-03-03 14:14:15,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:15,400 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 7 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:15,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2666 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-03 14:14:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2025-03-03 14:14:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 551 states have (on average 1.6134301270417424) internal successors, (889), 572 states have internal predecessors, (889), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-03 14:14:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1090 transitions. [2025-03-03 14:14:15,415 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1090 transitions. Word has length 167 [2025-03-03 14:14:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:15,415 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1090 transitions. [2025-03-03 14:14:15,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1090 transitions. [2025-03-03 14:14:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-03 14:14:15,417 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:15,418 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:15,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:15,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:15,618 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:15,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:15,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1285338119, now seen corresponding path program 1 times [2025-03-03 14:14:15,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:15,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147322519] [2025-03-03 14:14:15,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:15,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:15,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:14:15,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:14:15,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:15,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:14:15,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147322519] [2025-03-03 14:14:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147322519] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:15,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515971595] [2025-03-03 14:14:15,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:15,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:15,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:15,746 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:15,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-03 14:14:15,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-03 14:14:15,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-03 14:14:15,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:15,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:16,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 14:14:16,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:16,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:16,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515971595] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:16,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:16,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-03 14:14:16,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760264087] [2025-03-03 14:14:16,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:16,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:16,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:16,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:16,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:16,032 INFO L87 Difference]: Start difference. First operand 684 states and 1090 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:14:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:16,089 INFO L93 Difference]: Finished difference Result 1337 states and 2144 transitions. [2025-03-03 14:14:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:16,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 168 [2025-03-03 14:14:16,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:16,094 INFO L225 Difference]: With dead ends: 1337 [2025-03-03 14:14:16,094 INFO L226 Difference]: Without dead ends: 684 [2025-03-03 14:14:16,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:16,097 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 119 mSDsluCounter, 4469 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5388 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:16,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5388 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-03 14:14:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 663. [2025-03-03 14:14:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 530 states have (on average 1.6132075471698113) internal successors, (855), 551 states have internal predecessors, (855), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-03 14:14:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1056 transitions. [2025-03-03 14:14:16,116 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1056 transitions. Word has length 168 [2025-03-03 14:14:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:16,117 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1056 transitions. [2025-03-03 14:14:16,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:14:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1056 transitions. [2025-03-03 14:14:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-03 14:14:16,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:16,119 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:16,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-03 14:14:16,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-03 14:14:16,319 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:16,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1369361243, now seen corresponding path program 1 times [2025-03-03 14:14:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:16,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756666026] [2025-03-03 14:14:16,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:16,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-03 14:14:16,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-03 14:14:16,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:16,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:16,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:16,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756666026] [2025-03-03 14:14:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756666026] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:16,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110484656] [2025-03-03 14:14:16,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:16,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:16,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:16,442 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:16,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-03 14:14:16,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-03 14:14:16,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-03 14:14:16,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:16,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:16,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:16,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:16,773 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:16,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110484656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:16,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:16,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-03 14:14:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061131733] [2025-03-03 14:14:16,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:16,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:16,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:16,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:16,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:16,774 INFO L87 Difference]: Start difference. First operand 663 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:16,865 INFO L93 Difference]: Finished difference Result 1319 states and 2114 transitions. [2025-03-03 14:14:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:16,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2025-03-03 14:14:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:16,870 INFO L225 Difference]: With dead ends: 1319 [2025-03-03 14:14:16,870 INFO L226 Difference]: Without dead ends: 687 [2025-03-03 14:14:16,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:16,873 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 128 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:16,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2575 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:16,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2025-03-03 14:14:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 663. [2025-03-03 14:14:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 530 states have (on average 1.6113207547169812) internal successors, (854), 551 states have internal predecessors, (854), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-03 14:14:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1055 transitions. [2025-03-03 14:14:16,894 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1055 transitions. Word has length 170 [2025-03-03 14:14:16,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:16,894 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1055 transitions. [2025-03-03 14:14:16,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1055 transitions. [2025-03-03 14:14:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-03 14:14:16,897 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:16,897 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:16,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:17,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-03 14:14:17,098 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:17,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:17,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1926780833, now seen corresponding path program 1 times [2025-03-03 14:14:17,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:17,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368023641] [2025-03-03 14:14:17,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:17,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-03 14:14:17,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-03 14:14:17,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:17,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:17,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368023641] [2025-03-03 14:14:17,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368023641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:17,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:17,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:14:17,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041480682] [2025-03-03 14:14:17,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:17,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:17,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:17,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:17,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:17,160 INFO L87 Difference]: Start difference. First operand 663 states and 1055 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:17,188 INFO L93 Difference]: Finished difference Result 1254 states and 2023 transitions. [2025-03-03 14:14:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2025-03-03 14:14:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:17,193 INFO L225 Difference]: With dead ends: 1254 [2025-03-03 14:14:17,193 INFO L226 Difference]: Without dead ends: 623 [2025-03-03 14:14:17,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:14:17,195 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 8 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:17,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2693 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:17,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2025-03-03 14:14:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2025-03-03 14:14:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 493 states have (on average 1.6044624746450304) internal successors, (791), 512 states have internal predecessors, (791), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-03 14:14:17,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 988 transitions. [2025-03-03 14:14:17,208 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 988 transitions. Word has length 171 [2025-03-03 14:14:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:17,208 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 988 transitions. [2025-03-03 14:14:17,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:14:17,208 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 988 transitions. [2025-03-03 14:14:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-03 14:14:17,210 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:17,210 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:17,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-03 14:14:17,210 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:17,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1410659888, now seen corresponding path program 1 times [2025-03-03 14:14:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402907227] [2025-03-03 14:14:17,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:17,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-03 14:14:17,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-03 14:14:17,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:17,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:14:17,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402907227] [2025-03-03 14:14:17,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402907227] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:17,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:17,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:14:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93463504] [2025-03-03 14:14:17,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:17,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:17,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:17,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:17,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:17,323 INFO L87 Difference]: Start difference. First operand 623 states and 988 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:14:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:17,368 INFO L93 Difference]: Finished difference Result 1157 states and 1862 transitions. [2025-03-03 14:14:17,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:17,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2025-03-03 14:14:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:17,372 INFO L225 Difference]: With dead ends: 1157 [2025-03-03 14:14:17,372 INFO L226 Difference]: Without dead ends: 609 [2025-03-03 14:14:17,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:17,374 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 88 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:17,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5214 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2025-03-03 14:14:17,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2025-03-03 14:14:17,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 479 states have (on average 1.5991649269311066) internal successors, (766), 498 states have internal predecessors, (766), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-03 14:14:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 963 transitions. [2025-03-03 14:14:17,386 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 963 transitions. Word has length 172 [2025-03-03 14:14:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:17,387 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 963 transitions. [2025-03-03 14:14:17,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:14:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 963 transitions. [2025-03-03 14:14:17,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-03 14:14:17,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:17,389 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:17,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-03 14:14:17,389 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:17,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash -895899640, now seen corresponding path program 1 times [2025-03-03 14:14:17,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:17,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743641099] [2025-03-03 14:14:17,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:17,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:17,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-03 14:14:17,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-03 14:14:17,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:17,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:17,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:17,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743641099] [2025-03-03 14:14:17,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743641099] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:17,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:17,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:14:17,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685691108] [2025-03-03 14:14:17,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:17,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:14:17,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:17,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:14:17,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:17,592 INFO L87 Difference]: Start difference. First operand 609 states and 963 transitions. Second operand has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:14:17,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:17,688 INFO L93 Difference]: Finished difference Result 1184 states and 1890 transitions. [2025-03-03 14:14:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 14:14:17,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 173 [2025-03-03 14:14:17,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:17,692 INFO L225 Difference]: With dead ends: 1184 [2025-03-03 14:14:17,692 INFO L226 Difference]: Without dead ends: 600 [2025-03-03 14:14:17,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:17,695 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 45 mSDsluCounter, 5851 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 6693 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:17,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 6693 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-03-03 14:14:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2025-03-03 14:14:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 470 states have (on average 1.597872340425532) internal successors, (751), 489 states have internal predecessors, (751), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-03 14:14:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 948 transitions. [2025-03-03 14:14:17,707 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 948 transitions. Word has length 173 [2025-03-03 14:14:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:17,707 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 948 transitions. [2025-03-03 14:14:17,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:14:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 948 transitions. [2025-03-03 14:14:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-03-03 14:14:17,710 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:17,710 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:17,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-03 14:14:17,710 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:17,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:17,710 INFO L85 PathProgramCache]: Analyzing trace with hash 779316620, now seen corresponding path program 1 times [2025-03-03 14:14:17,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:17,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610649004] [2025-03-03 14:14:17,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:17,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:14:17,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:14:17,730 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:17,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:14:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610649004] [2025-03-03 14:14:17,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610649004] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149095352] [2025-03-03 14:14:17,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:17,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:17,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:17,998 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:17,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-03 14:14:18,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-03-03 14:14:18,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-03-03 14:14:18,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:18,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:18,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 1945 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-03 14:14:18,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-03 14:14:18,410 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:18,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149095352] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:18,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:18,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-03-03 14:14:18,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660706975] [2025-03-03 14:14:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:18,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:18,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:18,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:18,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-03-03 14:14:18,411 INFO L87 Difference]: Start difference. First operand 600 states and 948 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-03 14:14:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:20,639 INFO L93 Difference]: Finished difference Result 1950 states and 3192 transitions. [2025-03-03 14:14:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-03 14:14:20,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 174 [2025-03-03 14:14:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:20,647 INFO L225 Difference]: With dead ends: 1950 [2025-03-03 14:14:20,647 INFO L226 Difference]: Without dead ends: 1442 [2025-03-03 14:14:20,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-03-03 14:14:20,650 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 2337 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 4737 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 5256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 4737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:20,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2422 Valid, 2766 Invalid, 5256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 4737 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-03 14:14:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2025-03-03 14:14:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1328. [2025-03-03 14:14:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1041 states have (on average 1.637848222862632) internal successors, (1705), 1080 states have internal predecessors, (1705), 217 states have call successors, (217), 64 states have call predecessors, (217), 69 states have return successors, (236), 209 states have call predecessors, (236), 212 states have call successors, (236) [2025-03-03 14:14:20,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2158 transitions. [2025-03-03 14:14:20,688 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2158 transitions. Word has length 174 [2025-03-03 14:14:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:20,688 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2158 transitions. [2025-03-03 14:14:20,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-03 14:14:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2158 transitions. [2025-03-03 14:14:20,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-03 14:14:20,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:20,691 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:20,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:20,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:20,891 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:20,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:20,892 INFO L85 PathProgramCache]: Analyzing trace with hash 233037778, now seen corresponding path program 1 times [2025-03-03 14:14:20,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:20,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638099956] [2025-03-03 14:14:20,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:20,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-03 14:14:20,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-03 14:14:20,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:20,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:14:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638099956] [2025-03-03 14:14:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638099956] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028736355] [2025-03-03 14:14:21,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:21,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:21,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:21,164 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:21,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-03 14:14:21,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-03 14:14:21,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-03 14:14:21,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:21,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:21,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 1941 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-03 14:14:21,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:14:21,562 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:21,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028736355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:21,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:21,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-03 14:14:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070134070] [2025-03-03 14:14:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:21,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:21,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:21,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:21,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:14:21,563 INFO L87 Difference]: Start difference. First operand 1328 states and 2158 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-03 14:14:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:23,113 INFO L93 Difference]: Finished difference Result 2822 states and 4632 transitions. [2025-03-03 14:14:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 14:14:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 176 [2025-03-03 14:14:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:23,123 INFO L225 Difference]: With dead ends: 2822 [2025-03-03 14:14:23,123 INFO L226 Difference]: Without dead ends: 1586 [2025-03-03 14:14:23,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-03 14:14:23,128 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 2087 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:23,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 2037 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 3388 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-03 14:14:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2025-03-03 14:14:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1399. [2025-03-03 14:14:23,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1093 states have (on average 1.62580054894785) internal successors, (1777), 1138 states have internal predecessors, (1777), 225 states have call successors, (225), 69 states have call predecessors, (225), 80 states have return successors, (262), 217 states have call predecessors, (262), 220 states have call successors, (262) [2025-03-03 14:14:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 2264 transitions. [2025-03-03 14:14:23,167 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 2264 transitions. Word has length 176 [2025-03-03 14:14:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:23,168 INFO L471 AbstractCegarLoop]: Abstraction has 1399 states and 2264 transitions. [2025-03-03 14:14:23,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-03 14:14:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 2264 transitions. [2025-03-03 14:14:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-03 14:14:23,169 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:23,170 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:23,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-03 14:14:23,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:23,370 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:23,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:23,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1628506996, now seen corresponding path program 1 times [2025-03-03 14:14:23,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:23,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029481636] [2025-03-03 14:14:23,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:23,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:23,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:14:23,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:14:23,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:23,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:14:23,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029481636] [2025-03-03 14:14:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029481636] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291899191] [2025-03-03 14:14:23,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:23,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:23,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:23,645 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:23,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-03 14:14:23,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:14:23,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:14:23,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:23,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:23,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:14:23,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:23,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:23,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291899191] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:23,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:23,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-03 14:14:23,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944038255] [2025-03-03 14:14:23,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:23,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:14:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:23,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:14:23,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:23,936 INFO L87 Difference]: Start difference. First operand 1399 states and 2264 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:23,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:23,995 INFO L93 Difference]: Finished difference Result 3396 states and 5592 transitions. [2025-03-03 14:14:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:14:23,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2025-03-03 14:14:23,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:24,007 INFO L225 Difference]: With dead ends: 3396 [2025-03-03 14:14:24,007 INFO L226 Difference]: Without dead ends: 2093 [2025-03-03 14:14:24,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:24,012 INFO L435 NwaCegarLoop]: 1514 mSDtfsCounter, 776 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:24,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 2372 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:24,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2025-03-03 14:14:24,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1395. [2025-03-03 14:14:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1091 states have (on average 1.625114573785518) internal successors, (1773), 1134 states have internal predecessors, (1773), 225 states have call successors, (225), 69 states have call predecessors, (225), 78 states have return successors, (253), 217 states have call predecessors, (253), 220 states have call successors, (253) [2025-03-03 14:14:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2251 transitions. [2025-03-03 14:14:24,067 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2251 transitions. Word has length 181 [2025-03-03 14:14:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:24,067 INFO L471 AbstractCegarLoop]: Abstraction has 1395 states and 2251 transitions. [2025-03-03 14:14:24,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2251 transitions. [2025-03-03 14:14:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-03 14:14:24,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:24,070 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:24,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:24,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:24,273 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:24,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:24,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2077203635, now seen corresponding path program 1 times [2025-03-03 14:14:24,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:24,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506259749] [2025-03-03 14:14:24,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:24,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:24,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:14:24,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:14:24,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:24,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:14:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506259749] [2025-03-03 14:14:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506259749] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044384266] [2025-03-03 14:14:24,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:24,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:24,627 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:24,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-03 14:14:24,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:14:24,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:14:24,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:24,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:24,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-03 14:14:24,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:14:25,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044384266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:25,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:14:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585338130] [2025-03-03 14:14:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:25,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:25,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:25,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:25,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:25,009 INFO L87 Difference]: Start difference. First operand 1395 states and 2251 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:25,989 INFO L93 Difference]: Finished difference Result 4069 states and 6655 transitions. [2025-03-03 14:14:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:25,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2025-03-03 14:14:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:25,999 INFO L225 Difference]: With dead ends: 4069 [2025-03-03 14:14:26,000 INFO L226 Difference]: Without dead ends: 2766 [2025-03-03 14:14:26,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:26,004 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 1893 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:26,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 554 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-03 14:14:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2025-03-03 14:14:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2764. [2025-03-03 14:14:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2158 states have (on average 1.6292863762743282) internal successors, (3516), 2243 states have internal predecessors, (3516), 448 states have call successors, (448), 131 states have call predecessors, (448), 157 states have return successors, (530), 441 states have call predecessors, (530), 443 states have call successors, (530) [2025-03-03 14:14:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4494 transitions. [2025-03-03 14:14:26,151 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4494 transitions. Word has length 181 [2025-03-03 14:14:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:26,151 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 4494 transitions. [2025-03-03 14:14:26,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4494 transitions. [2025-03-03 14:14:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-03 14:14:26,164 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:26,164 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:26,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-03 14:14:26,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-03 14:14:26,365 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:26,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1952862956, now seen corresponding path program 1 times [2025-03-03 14:14:26,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:26,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701208603] [2025-03-03 14:14:26,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:26,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:26,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:14:26,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:14:26,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:26,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:14:26,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701208603] [2025-03-03 14:14:26,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701208603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:26,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:26,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:14:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057582796] [2025-03-03 14:14:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:26,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:14:26,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:26,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:14:26,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:26,561 INFO L87 Difference]: Start difference. First operand 2764 states and 4494 transitions. Second operand has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:26,687 INFO L93 Difference]: Finished difference Result 4051 states and 6602 transitions. [2025-03-03 14:14:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 181 [2025-03-03 14:14:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:26,693 INFO L225 Difference]: With dead ends: 4051 [2025-03-03 14:14:26,693 INFO L226 Difference]: Without dead ends: 1373 [2025-03-03 14:14:26,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:14:26,698 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 31 mSDsluCounter, 6696 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7539 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:26,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7539 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2025-03-03 14:14:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1373. [2025-03-03 14:14:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1075 states have (on average 1.6232558139534883) internal successors, (1745), 1117 states have internal predecessors, (1745), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2025-03-03 14:14:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2212 transitions. [2025-03-03 14:14:26,738 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2212 transitions. Word has length 181 [2025-03-03 14:14:26,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:26,738 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 2212 transitions. [2025-03-03 14:14:26,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2212 transitions. [2025-03-03 14:14:26,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-03-03 14:14:26,740 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:26,740 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:26,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-03 14:14:26,741 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:26,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash 31010432, now seen corresponding path program 1 times [2025-03-03 14:14:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:26,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376924660] [2025-03-03 14:14:26,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:26,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:26,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-03 14:14:26,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-03 14:14:26,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:26,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:14:27,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376924660] [2025-03-03 14:14:27,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376924660] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851093417] [2025-03-03 14:14:27,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:27,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:27,138 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:27,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-03 14:14:27,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-03 14:14:27,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-03 14:14:27,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:27,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:27,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 1959 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 14:14:27,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-03 14:14:27,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:14:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:14:27,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851093417] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:27,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-03 14:14:27,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 15 [2025-03-03 14:14:27,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534824102] [2025-03-03 14:14:27,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:27,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:27,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:27,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:27,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:14:27,608 INFO L87 Difference]: Start difference. First operand 1373 states and 2212 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-03 14:14:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:27,660 INFO L93 Difference]: Finished difference Result 1393 states and 2236 transitions. [2025-03-03 14:14:27,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:27,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2025-03-03 14:14:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:27,673 INFO L225 Difference]: With dead ends: 1393 [2025-03-03 14:14:27,673 INFO L226 Difference]: Without dead ends: 1379 [2025-03-03 14:14:27,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:14:27,674 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 0 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:27,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3409 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2025-03-03 14:14:27,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1379. [2025-03-03 14:14:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1379 states, 1081 states have (on average 1.6197964847363553) internal successors, (1751), 1123 states have internal predecessors, (1751), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2025-03-03 14:14:27,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2218 transitions. [2025-03-03 14:14:27,748 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2218 transitions. Word has length 182 [2025-03-03 14:14:27,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:27,749 INFO L471 AbstractCegarLoop]: Abstraction has 1379 states and 2218 transitions. [2025-03-03 14:14:27,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-03 14:14:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2218 transitions. [2025-03-03 14:14:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2025-03-03 14:14:27,753 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:27,754 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:27,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-03 14:14:27,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:27,954 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:27,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash -333777592, now seen corresponding path program 1 times [2025-03-03 14:14:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:27,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397123108] [2025-03-03 14:14:27,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:27,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:27,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 272 statements into 1 equivalence classes. [2025-03-03 14:14:27,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 272 of 272 statements. [2025-03-03 14:14:27,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:27,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:28,282 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2025-03-03 14:14:28,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:28,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397123108] [2025-03-03 14:14:28,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397123108] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:28,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718691905] [2025-03-03 14:14:28,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:28,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:28,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:28,285 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:28,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-03 14:14:28,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 272 statements into 1 equivalence classes. [2025-03-03 14:14:28,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 272 of 272 statements. [2025-03-03 14:14:28,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:28,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:28,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:28,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-03 14:14:28,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:14:28,954 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-03 14:14:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718691905] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:14:28,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:14:28,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2025-03-03 14:14:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345978386] [2025-03-03 14:14:28,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:14:28,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 14:14:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:28,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 14:14:28,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:14:28,956 INFO L87 Difference]: Start difference. First operand 1379 states and 2218 transitions. Second operand has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 12 states have internal predecessors, (268), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2025-03-03 14:14:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:35,440 INFO L93 Difference]: Finished difference Result 10259 states and 17172 transitions. [2025-03-03 14:14:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-03 14:14:35,440 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 12 states have internal predecessors, (268), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) Word has length 272 [2025-03-03 14:14:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:35,477 INFO L225 Difference]: With dead ends: 10259 [2025-03-03 14:14:35,477 INFO L226 Difference]: Without dead ends: 8966 [2025-03-03 14:14:35,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 562 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=653, Invalid=4177, Unknown=0, NotChecked=0, Total=4830 [2025-03-03 14:14:35,490 INFO L435 NwaCegarLoop]: 821 mSDtfsCounter, 6357 mSDsluCounter, 6477 mSDsCounter, 0 mSdLazyCounter, 15113 mSolverCounterSat, 2050 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6439 SdHoareTripleChecker+Valid, 7298 SdHoareTripleChecker+Invalid, 17163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2050 IncrementalHoareTripleChecker+Valid, 15113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:35,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6439 Valid, 7298 Invalid, 17163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2050 Valid, 15113 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2025-03-03 14:14:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8966 states. [2025-03-03 14:14:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8966 to 7784. [2025-03-03 14:14:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7784 states, 5992 states have (on average 1.6001335113484647) internal successors, (9588), 6244 states have internal predecessors, (9588), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 487 states have return successors, (1922), 1301 states have call predecessors, (1922), 1300 states have call successors, (1922) [2025-03-03 14:14:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7784 states to 7784 states and 12814 transitions. [2025-03-03 14:14:35,987 INFO L78 Accepts]: Start accepts. Automaton has 7784 states and 12814 transitions. Word has length 272 [2025-03-03 14:14:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:35,987 INFO L471 AbstractCegarLoop]: Abstraction has 7784 states and 12814 transitions. [2025-03-03 14:14:35,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.142857142857142) internal successors, (268), 12 states have internal predecessors, (268), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2025-03-03 14:14:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7784 states and 12814 transitions. [2025-03-03 14:14:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2025-03-03 14:14:36,001 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:36,002 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:36,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-03 14:14:36,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:36,202 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:36,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:36,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2077448206, now seen corresponding path program 1 times [2025-03-03 14:14:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:36,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925428016] [2025-03-03 14:14:36,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:36,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:36,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 274 statements into 1 equivalence classes. [2025-03-03 14:14:36,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 274 of 274 statements. [2025-03-03 14:14:36,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:36,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2025-03-03 14:14:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:36,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925428016] [2025-03-03 14:14:36,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925428016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:36,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:36,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 14:14:36,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842365297] [2025-03-03 14:14:36,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:36,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:36,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:36,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:36,371 INFO L87 Difference]: Start difference. First operand 7784 states and 12814 transitions. Second operand has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-03 14:14:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:36,814 INFO L93 Difference]: Finished difference Result 15491 states and 25536 transitions. [2025-03-03 14:14:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:36,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 274 [2025-03-03 14:14:36,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:36,840 INFO L225 Difference]: With dead ends: 15491 [2025-03-03 14:14:36,840 INFO L226 Difference]: Without dead ends: 7775 [2025-03-03 14:14:36,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:36,857 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 41 mSDsluCounter, 5012 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5856 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:36,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5856 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:36,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7775 states. [2025-03-03 14:14:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7775 to 7775. [2025-03-03 14:14:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7775 states, 5985 states have (on average 1.5996658312447787) internal successors, (9574), 6236 states have internal predecessors, (9574), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 485 states have return successors, (1918), 1300 states have call predecessors, (1918), 1300 states have call successors, (1918) [2025-03-03 14:14:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7775 states to 7775 states and 12796 transitions. [2025-03-03 14:14:37,162 INFO L78 Accepts]: Start accepts. Automaton has 7775 states and 12796 transitions. Word has length 274 [2025-03-03 14:14:37,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:37,162 INFO L471 AbstractCegarLoop]: Abstraction has 7775 states and 12796 transitions. [2025-03-03 14:14:37,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-03 14:14:37,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7775 states and 12796 transitions. [2025-03-03 14:14:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2025-03-03 14:14:37,173 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:37,173 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:37,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-03 14:14:37,173 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:37,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:37,174 INFO L85 PathProgramCache]: Analyzing trace with hash 288471710, now seen corresponding path program 1 times [2025-03-03 14:14:37,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:37,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319339184] [2025-03-03 14:14:37,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:37,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-03 14:14:37,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-03 14:14:37,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:37,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2025-03-03 14:14:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319339184] [2025-03-03 14:14:37,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319339184] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674970845] [2025-03-03 14:14:37,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:37,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:37,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:37,321 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:37,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-03 14:14:37,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 275 statements into 1 equivalence classes. [2025-03-03 14:14:37,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 275 of 275 statements. [2025-03-03 14:14:37,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:37,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:37,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:37,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2025-03-03 14:14:37,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:37,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674970845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:37,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:37,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-03-03 14:14:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687438997] [2025-03-03 14:14:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:37,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:37,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:37,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:37,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:37,728 INFO L87 Difference]: Start difference. First operand 7775 states and 12796 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-03 14:14:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:37,862 INFO L93 Difference]: Finished difference Result 10186 states and 16720 transitions. [2025-03-03 14:14:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:37,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 275 [2025-03-03 14:14:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:37,875 INFO L225 Difference]: With dead ends: 10186 [2025-03-03 14:14:37,875 INFO L226 Difference]: Without dead ends: 2451 [2025-03-03 14:14:37,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:37,893 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 1 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:37,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2508 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2025-03-03 14:14:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2451. [2025-03-03 14:14:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1914 states have (on average 1.5997910135841171) internal successors, (3062), 1992 states have internal predecessors, (3062), 381 states have call successors, (381), 114 states have call predecessors, (381), 155 states have return successors, (523), 368 states have call predecessors, (523), 377 states have call successors, (523) [2025-03-03 14:14:37,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3966 transitions. [2025-03-03 14:14:37,983 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3966 transitions. Word has length 275 [2025-03-03 14:14:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:37,983 INFO L471 AbstractCegarLoop]: Abstraction has 2451 states and 3966 transitions. [2025-03-03 14:14:37,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-03 14:14:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3966 transitions. [2025-03-03 14:14:37,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2025-03-03 14:14:37,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:37,986 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:37,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-03 14:14:38,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-03 14:14:38,187 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:38,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1816852652, now seen corresponding path program 1 times [2025-03-03 14:14:38,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607286414] [2025-03-03 14:14:38,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:38,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-03 14:14:38,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-03 14:14:38,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:38,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2025-03-03 14:14:38,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:38,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607286414] [2025-03-03 14:14:38,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607286414] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460654905] [2025-03-03 14:14:38,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:38,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:38,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:38,490 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:38,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-03 14:14:38,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 278 statements into 1 equivalence classes. [2025-03-03 14:14:38,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 278 of 278 statements. [2025-03-03 14:14:38,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:38,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:38,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 2436 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:38,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-03 14:14:38,877 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:38,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460654905] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:38,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:38,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-03 14:14:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623305731] [2025-03-03 14:14:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:38,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:38,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:38,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:38,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:38,878 INFO L87 Difference]: Start difference. First operand 2451 states and 3966 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:14:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:39,012 INFO L93 Difference]: Finished difference Result 4838 states and 7877 transitions. [2025-03-03 14:14:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 278 [2025-03-03 14:14:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:39,026 INFO L225 Difference]: With dead ends: 4838 [2025-03-03 14:14:39,027 INFO L226 Difference]: Without dead ends: 2471 [2025-03-03 14:14:39,034 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:39,035 INFO L435 NwaCegarLoop]: 845 mSDtfsCounter, 0 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:39,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4218 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:39,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2025-03-03 14:14:39,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2465. [2025-03-03 14:14:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 1924 states have (on average 1.5966735966735968) internal successors, (3072), 2004 states have internal predecessors, (3072), 381 states have call successors, (381), 114 states have call predecessors, (381), 159 states have return successors, (527), 370 states have call predecessors, (527), 377 states have call successors, (527) [2025-03-03 14:14:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3980 transitions. [2025-03-03 14:14:39,189 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3980 transitions. Word has length 278 [2025-03-03 14:14:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:39,190 INFO L471 AbstractCegarLoop]: Abstraction has 2465 states and 3980 transitions. [2025-03-03 14:14:39,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:14:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3980 transitions. [2025-03-03 14:14:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2025-03-03 14:14:39,194 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:39,194 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:39,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-03 14:14:39,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-03 14:14:39,395 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:39,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:39,395 INFO L85 PathProgramCache]: Analyzing trace with hash -719731230, now seen corresponding path program 1 times [2025-03-03 14:14:39,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:39,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279656918] [2025-03-03 14:14:39,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:39,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:39,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 284 statements into 1 equivalence classes. [2025-03-03 14:14:39,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 284 of 284 statements. [2025-03-03 14:14:39,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:39,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-03-03 14:14:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279656918] [2025-03-03 14:14:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279656918] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541657061] [2025-03-03 14:14:39,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:39,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:39,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:39,572 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:39,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-03 14:14:39,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 284 statements into 1 equivalence classes. [2025-03-03 14:14:39,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 284 of 284 statements. [2025-03-03 14:14:39,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:39,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:39,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 14:14:39,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-03 14:14:40,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:14:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2025-03-03 14:14:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541657061] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:14:40,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:14:40,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 18 [2025-03-03 14:14:40,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702959299] [2025-03-03 14:14:40,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:14:40,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-03 14:14:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:40,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-03 14:14:40,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2025-03-03 14:14:40,701 INFO L87 Difference]: Start difference. First operand 2465 states and 3980 transitions. Second operand has 18 states, 18 states have (on average 16.38888888888889) internal successors, (295), 18 states have internal predecessors, (295), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2025-03-03 14:14:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:47,920 INFO L93 Difference]: Finished difference Result 12497 states and 20423 transitions. [2025-03-03 14:14:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2025-03-03 14:14:47,921 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.38888888888889) internal successors, (295), 18 states have internal predecessors, (295), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) Word has length 284 [2025-03-03 14:14:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:47,954 INFO L225 Difference]: With dead ends: 12497 [2025-03-03 14:14:47,955 INFO L226 Difference]: Without dead ends: 9560 [2025-03-03 14:14:47,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 610 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6395 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2332, Invalid=14180, Unknown=0, NotChecked=0, Total=16512 [2025-03-03 14:14:47,974 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 14868 mSDsluCounter, 6401 mSDsCounter, 0 mSdLazyCounter, 11238 mSolverCounterSat, 4767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14905 SdHoareTripleChecker+Valid, 7248 SdHoareTripleChecker+Invalid, 16005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4767 IncrementalHoareTripleChecker+Valid, 11238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:47,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14905 Valid, 7248 Invalid, 16005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4767 Valid, 11238 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2025-03-03 14:14:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9560 states. [2025-03-03 14:14:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9560 to 9098. [2025-03-03 14:14:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9098 states, 6895 states have (on average 1.550253807106599) internal successors, (10689), 7241 states have internal predecessors, (10689), 1599 states have call successors, (1599), 468 states have call predecessors, (1599), 603 states have return successors, (2169), 1580 states have call predecessors, (2169), 1595 states have call successors, (2169) [2025-03-03 14:14:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 14457 transitions. [2025-03-03 14:14:48,427 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 14457 transitions. Word has length 284 [2025-03-03 14:14:48,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:48,428 INFO L471 AbstractCegarLoop]: Abstraction has 9098 states and 14457 transitions. [2025-03-03 14:14:48,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.38888888888889) internal successors, (295), 18 states have internal predecessors, (295), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2025-03-03 14:14:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 14457 transitions. [2025-03-03 14:14:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-03-03 14:14:48,431 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:48,431 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:48,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-03 14:14:48,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-03 14:14:48,633 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:48,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:48,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1966487932, now seen corresponding path program 1 times [2025-03-03 14:14:48,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:48,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440067331] [2025-03-03 14:14:48,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:48,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 234 statements into 1 equivalence classes. [2025-03-03 14:14:48,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 234 of 234 statements. [2025-03-03 14:14:48,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:48,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:48,925 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-03-03 14:14:48,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440067331] [2025-03-03 14:14:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440067331] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167883808] [2025-03-03 14:14:48,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:48,928 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:48,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-03 14:14:49,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 234 statements into 1 equivalence classes. [2025-03-03 14:14:49,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 234 of 234 statements. [2025-03-03 14:14:49,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:49,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:49,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 2100 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 14:14:49,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-03 14:14:49,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:14:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2025-03-03 14:14:49,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167883808] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:14:49,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:14:49,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2025-03-03 14:14:49,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582770182] [2025-03-03 14:14:49,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:14:49,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-03 14:14:49,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:49,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-03 14:14:49,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-03-03 14:14:49,953 INFO L87 Difference]: Start difference. First operand 9098 states and 14457 transitions. Second operand has 23 states, 23 states have (on average 13.565217391304348) internal successors, (312), 19 states have internal predecessors, (312), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2025-03-03 14:14:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:55,423 INFO L93 Difference]: Finished difference Result 29482 states and 47511 transitions. [2025-03-03 14:14:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 14:14:55,423 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.565217391304348) internal successors, (312), 19 states have internal predecessors, (312), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) Word has length 234 [2025-03-03 14:14:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:55,504 INFO L225 Difference]: With dead ends: 29482 [2025-03-03 14:14:55,504 INFO L226 Difference]: Without dead ends: 20472 [2025-03-03 14:14:55,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 469 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2025-03-03 14:14:55,541 INFO L435 NwaCegarLoop]: 800 mSDtfsCounter, 5889 mSDsluCounter, 7482 mSDsCounter, 0 mSdLazyCounter, 14567 mSolverCounterSat, 1834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5889 SdHoareTripleChecker+Valid, 8282 SdHoareTripleChecker+Invalid, 16401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1834 IncrementalHoareTripleChecker+Valid, 14567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:55,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5889 Valid, 8282 Invalid, 16401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1834 Valid, 14567 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-03-03 14:14:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20472 states. [2025-03-03 14:14:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20472 to 19850. [2025-03-03 14:14:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19850 states, 14835 states have (on average 1.5451297607010448) internal successors, (22922), 15602 states have internal predecessors, (22922), 3796 states have call successors, (3796), 908 states have call predecessors, (3796), 1218 states have return successors, (5249), 3803 states have call predecessors, (5249), 3792 states have call successors, (5249) [2025-03-03 14:14:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19850 states to 19850 states and 31967 transitions. [2025-03-03 14:14:56,783 INFO L78 Accepts]: Start accepts. Automaton has 19850 states and 31967 transitions. Word has length 234 [2025-03-03 14:14:56,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:56,784 INFO L471 AbstractCegarLoop]: Abstraction has 19850 states and 31967 transitions. [2025-03-03 14:14:56,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.565217391304348) internal successors, (312), 19 states have internal predecessors, (312), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2025-03-03 14:14:56,784 INFO L276 IsEmpty]: Start isEmpty. Operand 19850 states and 31967 transitions. [2025-03-03 14:14:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2025-03-03 14:14:56,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:56,790 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:56,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:56,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:56,995 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:56,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:56,995 INFO L85 PathProgramCache]: Analyzing trace with hash 615418666, now seen corresponding path program 1 times [2025-03-03 14:14:56,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:56,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322844603] [2025-03-03 14:14:56,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:56,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:57,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 238 statements into 1 equivalence classes. [2025-03-03 14:14:57,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 238 of 238 statements. [2025-03-03 14:14:57,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:57,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-03 14:14:57,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:57,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322844603] [2025-03-03 14:14:57,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322844603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:57,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:57,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:14:57,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789797263] [2025-03-03 14:14:57,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:57,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:57,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:57,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:57,114 INFO L87 Difference]: Start difference. First operand 19850 states and 31967 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-03 14:14:58,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:58,127 INFO L93 Difference]: Finished difference Result 39720 states and 64307 transitions. [2025-03-03 14:14:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:58,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2025-03-03 14:14:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:58,226 INFO L225 Difference]: With dead ends: 39720 [2025-03-03 14:14:58,226 INFO L226 Difference]: Without dead ends: 20010 [2025-03-03 14:14:58,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:58,297 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 0 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4174 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:58,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4174 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20010 states. [2025-03-03 14:14:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20010 to 19962. [2025-03-03 14:14:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19962 states, 14947 states have (on average 1.538904127918646) internal successors, (23002), 15686 states have internal predecessors, (23002), 3768 states have call successors, (3768), 908 states have call predecessors, (3768), 1246 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-03 14:14:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19962 states to 19962 states and 32111 transitions. [2025-03-03 14:14:59,652 INFO L78 Accepts]: Start accepts. Automaton has 19962 states and 32111 transitions. Word has length 238 [2025-03-03 14:14:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:59,652 INFO L471 AbstractCegarLoop]: Abstraction has 19962 states and 32111 transitions. [2025-03-03 14:14:59,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-03 14:14:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 19962 states and 32111 transitions. [2025-03-03 14:14:59,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-03 14:14:59,660 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:59,660 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:59,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-03 14:14:59,660 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:59,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:59,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1634612408, now seen corresponding path program 1 times [2025-03-03 14:14:59,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:59,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336376914] [2025-03-03 14:14:59,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:59,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-03 14:14:59,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-03 14:14:59,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:59,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-03 14:15:00,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336376914] [2025-03-03 14:15:00,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336376914] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:00,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671013378] [2025-03-03 14:15:00,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:00,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:00,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:00,078 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:00,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-03 14:15:00,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-03 14:15:00,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-03 14:15:00,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:00,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:00,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:15:00,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-03 14:15:00,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671013378] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:00,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:00,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:15:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99554645] [2025-03-03 14:15:00,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:00,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:00,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:00,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:15:00,500 INFO L87 Difference]: Start difference. First operand 19962 states and 32111 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-03 14:15:02,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:02,065 INFO L93 Difference]: Finished difference Result 40500 states and 65894 transitions. [2025-03-03 14:15:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:15:02,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 314 [2025-03-03 14:15:02,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:02,169 INFO L225 Difference]: With dead ends: 40500 [2025-03-03 14:15:02,169 INFO L226 Difference]: Without dead ends: 20682 [2025-03-03 14:15:02,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:15:02,239 INFO L435 NwaCegarLoop]: 783 mSDtfsCounter, 144 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:02,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2326 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:15:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20682 states. [2025-03-03 14:15:03,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20682 to 20586. [2025-03-03 14:15:03,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20586 states, 15555 states have (on average 1.5538412086145934) internal successors, (24170), 16294 states have internal predecessors, (24170), 3768 states have call successors, (3768), 924 states have call predecessors, (3768), 1262 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-03 14:15:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20586 states to 20586 states and 33279 transitions. [2025-03-03 14:15:03,157 INFO L78 Accepts]: Start accepts. Automaton has 20586 states and 33279 transitions. Word has length 314 [2025-03-03 14:15:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:03,158 INFO L471 AbstractCegarLoop]: Abstraction has 20586 states and 33279 transitions. [2025-03-03 14:15:03,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-03 14:15:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 20586 states and 33279 transitions. [2025-03-03 14:15:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2025-03-03 14:15:03,163 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:03,164 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:03,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-03 14:15:03,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:03,366 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:03,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:03,366 INFO L85 PathProgramCache]: Analyzing trace with hash 130837371, now seen corresponding path program 1 times [2025-03-03 14:15:03,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:03,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376753197] [2025-03-03 14:15:03,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:03,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:03,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 245 statements into 1 equivalence classes. [2025-03-03 14:15:03,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 245 of 245 statements. [2025-03-03 14:15:03,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:03,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-03 14:15:03,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376753197] [2025-03-03 14:15:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376753197] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:15:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:15:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582637980] [2025-03-03 14:15:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:03,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:15:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:03,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:15:03,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:15:03,591 INFO L87 Difference]: Start difference. First operand 20586 states and 33279 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-03 14:15:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:04,573 INFO L93 Difference]: Finished difference Result 42436 states and 69667 transitions. [2025-03-03 14:15:04,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:15:04,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 245 [2025-03-03 14:15:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:04,695 INFO L225 Difference]: With dead ends: 42436 [2025-03-03 14:15:04,696 INFO L226 Difference]: Without dead ends: 20722 [2025-03-03 14:15:04,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:15:04,790 INFO L435 NwaCegarLoop]: 847 mSDtfsCounter, 260 mSDsluCounter, 4047 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 4894 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:04,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 4894 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:15:04,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20722 states. [2025-03-03 14:15:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20722 to 20586. [2025-03-03 14:15:05,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20586 states, 15555 states have (on average 1.5407264545162327) internal successors, (23966), 16294 states have internal predecessors, (23966), 3768 states have call successors, (3768), 924 states have call predecessors, (3768), 1262 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-03 14:15:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20586 states to 20586 states and 33075 transitions. [2025-03-03 14:15:05,823 INFO L78 Accepts]: Start accepts. Automaton has 20586 states and 33075 transitions. Word has length 245 [2025-03-03 14:15:05,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:05,824 INFO L471 AbstractCegarLoop]: Abstraction has 20586 states and 33075 transitions. [2025-03-03 14:15:05,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-03 14:15:05,824 INFO L276 IsEmpty]: Start isEmpty. Operand 20586 states and 33075 transitions. [2025-03-03 14:15:05,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2025-03-03 14:15:05,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:05,830 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:05,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-03-03 14:15:05,830 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:05,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:05,830 INFO L85 PathProgramCache]: Analyzing trace with hash 144854753, now seen corresponding path program 1 times [2025-03-03 14:15:05,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:05,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333156363] [2025-03-03 14:15:05,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:05,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:05,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 324 statements into 1 equivalence classes. [2025-03-03 14:15:05,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 324 of 324 statements. [2025-03-03 14:15:05,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:05,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2025-03-03 14:15:06,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:06,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333156363] [2025-03-03 14:15:06,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333156363] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:06,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690587507] [2025-03-03 14:15:06,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:06,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:06,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:06,083 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:06,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-03 14:15:06,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 324 statements into 1 equivalence classes. [2025-03-03 14:15:06,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 324 of 324 statements. [2025-03-03 14:15:06,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:06,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:06,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:15:06,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2025-03-03 14:15:06,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:06,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690587507] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:06,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:15:06,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008357961] [2025-03-03 14:15:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:06,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:06,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:06,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:06,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:15:06,448 INFO L87 Difference]: Start difference. First operand 20586 states and 33075 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-03 14:15:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:08,095 INFO L93 Difference]: Finished difference Result 41796 states and 67806 transitions. [2025-03-03 14:15:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:15:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 324 [2025-03-03 14:15:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:08,222 INFO L225 Difference]: With dead ends: 41796 [2025-03-03 14:15:08,222 INFO L226 Difference]: Without dead ends: 21354 [2025-03-03 14:15:08,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:15:08,317 INFO L435 NwaCegarLoop]: 772 mSDtfsCounter, 142 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:08,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2293 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:15:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21354 states. [2025-03-03 14:15:09,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21354 to 21210. [2025-03-03 14:15:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21210 states, 16163 states have (on average 1.5550331002907876) internal successors, (25134), 16902 states have internal predecessors, (25134), 3768 states have call successors, (3768), 940 states have call predecessors, (3768), 1278 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-03 14:15:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21210 states to 21210 states and 34243 transitions. [2025-03-03 14:15:09,589 INFO L78 Accepts]: Start accepts. Automaton has 21210 states and 34243 transitions. Word has length 324 [2025-03-03 14:15:09,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:09,589 INFO L471 AbstractCegarLoop]: Abstraction has 21210 states and 34243 transitions. [2025-03-03 14:15:09,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-03 14:15:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 21210 states and 34243 transitions. [2025-03-03 14:15:09,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2025-03-03 14:15:09,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:09,595 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:09,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-03 14:15:09,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-03 14:15:09,796 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:09,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:09,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2029511958, now seen corresponding path program 1 times [2025-03-03 14:15:09,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:09,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640633067] [2025-03-03 14:15:09,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:09,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:09,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 250 statements into 1 equivalence classes. [2025-03-03 14:15:09,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 250 of 250 statements. [2025-03-03 14:15:09,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:09,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-03 14:15:09,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:09,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640633067] [2025-03-03 14:15:09,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640633067] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:09,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311758212] [2025-03-03 14:15:09,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:09,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:09,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:09,868 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:09,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-03 14:15:10,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 250 statements into 1 equivalence classes. [2025-03-03 14:15:10,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 250 of 250 statements. [2025-03-03 14:15:10,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:10,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:10,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:15:10,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:10,201 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-03-03 14:15:10,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:10,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311758212] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:10,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:10,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:15:10,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447875799] [2025-03-03 14:15:10,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:10,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:10,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:10,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:10,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:15:10,202 INFO L87 Difference]: Start difference. First operand 21210 states and 34243 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:15:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:11,252 INFO L93 Difference]: Finished difference Result 42966 states and 69843 transitions. [2025-03-03 14:15:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:15:11,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 250 [2025-03-03 14:15:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:11,375 INFO L225 Difference]: With dead ends: 42966 [2025-03-03 14:15:11,375 INFO L226 Difference]: Without dead ends: 21578 [2025-03-03 14:15:11,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:15:11,468 INFO L435 NwaCegarLoop]: 815 mSDtfsCounter, 10 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:11,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2408 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21578 states. [2025-03-03 14:15:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21578 to 21514. [2025-03-03 14:15:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21514 states, 16429 states have (on average 1.515977844056242) internal successors, (24906), 17168 states have internal predecessors, (24906), 3768 states have call successors, (3768), 978 states have call predecessors, (3768), 1316 states have return successors, (5395), 3831 states have call predecessors, (5395), 3764 states have call successors, (5395) [2025-03-03 14:15:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21514 states to 21514 states and 34069 transitions. [2025-03-03 14:15:12,428 INFO L78 Accepts]: Start accepts. Automaton has 21514 states and 34069 transitions. Word has length 250 [2025-03-03 14:15:12,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:12,428 INFO L471 AbstractCegarLoop]: Abstraction has 21514 states and 34069 transitions. [2025-03-03 14:15:12,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:15:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 21514 states and 34069 transitions. [2025-03-03 14:15:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2025-03-03 14:15:12,433 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:12,434 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:12,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-03-03 14:15:12,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-03-03 14:15:12,634 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:12,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:12,635 INFO L85 PathProgramCache]: Analyzing trace with hash -554646817, now seen corresponding path program 1 times [2025-03-03 14:15:12,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:12,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723347998] [2025-03-03 14:15:12,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:12,648 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 252 statements into 1 equivalence classes. [2025-03-03 14:15:12,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 252 of 252 statements. [2025-03-03 14:15:12,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:12,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-03 14:15:12,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723347998] [2025-03-03 14:15:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723347998] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055338520] [2025-03-03 14:15:12,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:12,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:12,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:12,707 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:12,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-03-03 14:15:12,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 252 statements into 1 equivalence classes. [2025-03-03 14:15:13,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 252 of 252 statements. [2025-03-03 14:15:13,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:13,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:13,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 14:15:13,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 94 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2025-03-03 14:15:13,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:15:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2025-03-03 14:15:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055338520] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:15:13,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:15:13,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 8] total 16 [2025-03-03 14:15:13,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748132285] [2025-03-03 14:15:13,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:15:13,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-03 14:15:13,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:13,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-03 14:15:13,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-03-03 14:15:13,590 INFO L87 Difference]: Start difference. First operand 21514 states and 34069 transitions. Second operand has 16 states, 16 states have (on average 16.0) internal successors, (256), 14 states have internal predecessors, (256), 7 states have call successors, (52), 5 states have call predecessors, (52), 11 states have return successors, (53), 9 states have call predecessors, (53), 7 states have call successors, (53)