./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:11:30,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:11:30,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:11:30,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:11:30,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:11:30,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:11:30,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:11:30,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:11:30,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:11:30,251 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:11:30,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:11:30,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:11:30,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:11:30,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:11:30,252 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:11:30,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:11:30,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:11:30,252 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:11:30,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:11:30,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:11:30,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:11:30,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:11:30,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:11:30,257 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:11:30,257 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:11:30,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:11:30,258 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 -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2025-03-03 14:11:30,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:11:30,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:11:30,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:11:30,494 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:11:30,494 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:11:30,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2025-03-03 14:11:31,608 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/166ae277b/8173fb786bd049289a2d6fff7a538647/FLAGb4c14e479 [2025-03-03 14:11:31,888 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:11:31,889 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2025-03-03 14:11:31,909 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/166ae277b/8173fb786bd049289a2d6fff7a538647/FLAGb4c14e479 [2025-03-03 14:11:32,169 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/166ae277b/8173fb786bd049289a2d6fff7a538647 [2025-03-03 14:11:32,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:11:32,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:11:32,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:11:32,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:11:32,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:11:32,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2219d53c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32, skipping insertion in model container [2025-03-03 14:11:32,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,214 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:11:32,508 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_spec13_product30.cil.c[61393,61406] [2025-03-03 14:11:32,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:11:32,575 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:11:32,581 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2025-03-03 14:11:32,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [169] [2025-03-03 14:11:32,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification13_spec.i","") [837] [2025-03-03 14:11:32,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [932] [2025-03-03 14:11:32,582 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1290] [2025-03-03 14:11:32,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1382] [2025-03-03 14:11:32,583 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2960] [2025-03-03 14:11:32,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2995] [2025-03-03 14:11:32,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3004] [2025-03-03 14:11:32,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3019] [2025-03-03 14:11:32,660 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_spec13_product30.cil.c[61393,61406] [2025-03-03 14:11:32,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:11:32,698 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:11:32,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32 WrapperNode [2025-03-03 14:11:32,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:11:32,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:11:32,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:11:32,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:11:32,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,755 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 879 [2025-03-03 14:11:32,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:11:32,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:11:32,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:11:32,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:11:32,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,762 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,788 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 14:11:32,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,794 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,811 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:11:32,828 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:11:32,828 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:11:32,828 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:11:32,829 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (1/1) ... [2025-03-03 14:11:32,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:11:32,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:32,854 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 14:11:32,856 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 14:11:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-03 14:11:32,872 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-03 14:11:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:11:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-03 14:11:32,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-03 14:11:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:11:32,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:11:32,872 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2025-03-03 14:11:32,872 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2025-03-03 14:11:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:11:32,873 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:11:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:11:32,873 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:11:32,873 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-03 14:11:32,874 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-03 14:11:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:11:32,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:11:32,874 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2025-03-03 14:11:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2025-03-03 14:11:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:11:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:11:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:11:32,875 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:11:32,875 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:11:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:11:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:11:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:11:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:11:32,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:11:32,876 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:11:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:11:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:11:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:11:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:11:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:11:32,877 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:11:32,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:11:32,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:11:32,879 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:11:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:11:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:11:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:11:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:11:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:11:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:11:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:11:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2025-03-03 14:11:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2025-03-03 14:11:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:11:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:11:32,880 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:11:32,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:11:33,032 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:11:33,035 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:11:33,068 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1681: #res := ~retValue_acc~12; [2025-03-03 14:11:33,090 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L166: #res := ~retValue_acc~2; [2025-03-03 14:11:33,108 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L88: #res := ~retValue_acc~0; [2025-03-03 14:11:33,111 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1456: #res := ~retValue_acc~8; [2025-03-03 14:11:33,207 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2957: #res := ~retValue_acc~22; [2025-03-03 14:11:33,337 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2205: #res#1 := ~retValue_acc~17#1; [2025-03-03 14:11:33,338 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2239-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~18#1; [2025-03-03 14:11:33,383 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2337: #res := ~retValue_acc~21; [2025-03-03 14:11:33,393 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L127: #res := ~retValue_acc~1; [2025-03-03 14:11:33,511 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2166: #res := ~retValue_acc~16; [2025-03-03 14:11:33,520 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1672: #res := ~retValue_acc~11; [2025-03-03 14:11:33,557 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1721-1: isEmpty_#res#1 := isEmpty_~retValue_acc~13#1; [2025-03-03 14:11:33,604 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1801-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~14#1; [2025-03-03 14:11:33,604 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1814-1: isIdle_#res#1 := isIdle_~retValue_acc~15#1; [2025-03-03 14:11:33,631 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1638-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; [2025-03-03 14:11:33,683 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L523: #res := ~retValue_acc~4; [2025-03-03 14:11:33,768 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1629-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~9#1; [2025-03-03 14:11:33,768 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2323-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~20#1; [2025-03-03 14:11:33,768 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2295-1: stopRequestedAtCurrentFloor__wrappee__empty_#res#1 := stopRequestedAtCurrentFloor__wrappee__empty_~retValue_acc~19#1; [2025-03-03 14:11:33,827 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2992-1: valid_product_#res#1 := valid_product_~retValue_acc~24#1; [2025-03-03 14:11:33,827 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1287-1: main_#res#1 := main_~retValue_acc~7#1; [2025-03-03 14:11:33,842 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L287: #res := ~retValue_acc~3; [2025-03-03 14:11:33,845 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L834: #res := ~retValue_acc~5; [2025-03-03 14:11:33,979 INFO L? ?]: Removed 475 outVars from TransFormulas that were not future-live. [2025-03-03 14:11:33,979 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:11:34,007 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:11:34,007 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:11:34,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:11:34 BoogieIcfgContainer [2025-03-03 14:11:34,007 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:11:34,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:11:34,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:11:34,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:11:34,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:11:32" (1/3) ... [2025-03-03 14:11:34,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0f94d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:11:34, skipping insertion in model container [2025-03-03 14:11:34,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:11:32" (2/3) ... [2025-03-03 14:11:34,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0f94d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:11:34, skipping insertion in model container [2025-03-03 14:11:34,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:11:34" (3/3) ... [2025-03-03 14:11:34,014 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2025-03-03 14:11:34,025 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:11:34,028 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec13_product30.cil.c that has 27 procedures, 607 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-03 14:11:34,090 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:11:34,099 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;@3c690e49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:11:34,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:11:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 607 states, 477 states have (on average 1.6855345911949686) internal successors, (804), 497 states have internal predecessors, (804), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-03 14:11:34,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-03 14:11:34,118 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:34,120 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:34,120 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:34,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash -609546154, now seen corresponding path program 1 times [2025-03-03 14:11:34,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499314534] [2025-03-03 14:11:34,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:34,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:34,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-03 14:11:34,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 14:11:34,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:34,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 14:11:34,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:34,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499314534] [2025-03-03 14:11:34,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499314534] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440677017] [2025-03-03 14:11:34,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:34,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:34,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:34,560 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 14:11:34,562 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 14:11:34,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-03 14:11:34,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 14:11:34,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:34,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:34,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:34,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:11:34,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:34,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440677017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:34,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:34,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:34,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093496446] [2025-03-03 14:11:34,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:34,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:34,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:34,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:34,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:34,932 INFO L87 Difference]: Start difference. First operand has 607 states, 477 states have (on average 1.6855345911949686) internal successors, (804), 497 states have internal predecessors, (804), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:35,076 INFO L93 Difference]: Finished difference Result 1213 states and 2032 transitions. [2025-03-03 14:11:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:35,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2025-03-03 14:11:35,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:35,096 INFO L225 Difference]: With dead ends: 1213 [2025-03-03 14:11:35,096 INFO L226 Difference]: Without dead ends: 606 [2025-03-03 14:11:35,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 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 14:11:35,109 INFO L435 NwaCegarLoop]: 987 mSDtfsCounter, 17 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:35,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2953 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2025-03-03 14:11:35,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 606. [2025-03-03 14:11:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 478 states have (on average 1.6778242677824269) internal successors, (802), 496 states have internal predecessors, (802), 102 states have call successors, (102), 27 states have call predecessors, (102), 25 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-03 14:11:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 1003 transitions. [2025-03-03 14:11:35,186 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 1003 transitions. Word has length 83 [2025-03-03 14:11:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:35,187 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 1003 transitions. [2025-03-03 14:11:35,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 1003 transitions. [2025-03-03 14:11:35,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-03 14:11:35,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:35,193 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] [2025-03-03 14:11:35,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:35,393 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 14:11:35,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:35,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 787668443, now seen corresponding path program 1 times [2025-03-03 14:11:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:35,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950354293] [2025-03-03 14:11:35,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:35,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:35,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-03 14:11:35,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-03 14:11:35,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:35,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:35,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:35,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950354293] [2025-03-03 14:11:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950354293] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:35,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306810530] [2025-03-03 14:11:35,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:35,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:35,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:35,755 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 14:11:35,757 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 14:11:35,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-03 14:11:36,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-03 14:11:36,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:36,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:36,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:36,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:11:36,091 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:36,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306810530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:36,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:36,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:11:36,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866640519] [2025-03-03 14:11:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:36,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:36,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:36,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:36,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:11:36,093 INFO L87 Difference]: Start difference. First operand 606 states and 1003 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:11:36,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:36,328 INFO L93 Difference]: Finished difference Result 1265 states and 2110 transitions. [2025-03-03 14:11:36,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:36,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-03-03 14:11:36,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:36,334 INFO L225 Difference]: With dead ends: 1265 [2025-03-03 14:11:36,334 INFO L226 Difference]: Without dead ends: 669 [2025-03-03 14:11:36,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:36,338 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 122 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:36,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 2815 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:11:36,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-03-03 14:11:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 651. [2025-03-03 14:11:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6973180076628354) internal successors, (886), 540 states have internal predecessors, (886), 102 states have call successors, (102), 28 states have call predecessors, (102), 26 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-03 14:11:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1087 transitions. [2025-03-03 14:11:36,366 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1087 transitions. Word has length 101 [2025-03-03 14:11:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:36,367 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 1087 transitions. [2025-03-03 14:11:36,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:11:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1087 transitions. [2025-03-03 14:11:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-03 14:11:36,370 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:36,370 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:36,378 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 14:11:36,574 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 14:11:36,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:36,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:36,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1100179642, now seen corresponding path program 1 times [2025-03-03 14:11:36,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:36,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155416156] [2025-03-03 14:11:36,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:36,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:36,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:11:36,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:11:36,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:36,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:11:36,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155416156] [2025-03-03 14:11:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155416156] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519791606] [2025-03-03 14:11:36,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:36,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:36,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:36,763 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 14:11:36,766 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 14:11:36,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:11:36,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:11:36,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:36,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:36,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:36,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 14:11:37,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:37,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519791606] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:37,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:37,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-03 14:11:37,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292365987] [2025-03-03 14:11:37,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:37,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:37,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:37,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:37,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:37,034 INFO L87 Difference]: Start difference. First operand 651 states and 1087 transitions. Second operand has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:37,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:37,153 INFO L93 Difference]: Finished difference Result 1317 states and 2201 transitions. [2025-03-03 14:11:37,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:37,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2025-03-03 14:11:37,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:37,159 INFO L225 Difference]: With dead ends: 1317 [2025-03-03 14:11:37,159 INFO L226 Difference]: Without dead ends: 676 [2025-03-03 14:11:37,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:37,164 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 89 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:37,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5768 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:37,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2025-03-03 14:11:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 664. [2025-03-03 14:11:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 532 states have (on average 1.693609022556391) internal successors, (901), 552 states have internal predecessors, (901), 103 states have call successors, (103), 28 states have call predecessors, (103), 28 states have return successors, (104), 97 states have call predecessors, (104), 100 states have call successors, (104) [2025-03-03 14:11:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1108 transitions. [2025-03-03 14:11:37,189 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1108 transitions. Word has length 87 [2025-03-03 14:11:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:37,190 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1108 transitions. [2025-03-03 14:11:37,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1108 transitions. [2025-03-03 14:11:37,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:11:37,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:37,192 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:37,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 14:11:37,396 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 14:11:37,396 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:37,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:37,396 INFO L85 PathProgramCache]: Analyzing trace with hash -841573305, now seen corresponding path program 1 times [2025-03-03 14:11:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451528398] [2025-03-03 14:11:37,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:37,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:37,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:11:37,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:11:37,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:37,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:37,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451528398] [2025-03-03 14:11:37,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451528398] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:37,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89624751] [2025-03-03 14:11:37,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:37,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:37,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:37,500 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 14:11:37,501 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 14:11:37,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:11:37,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:11:37,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:37,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:37,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:37,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 14:11:37,714 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89624751] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411907906] [2025-03-03 14:11:37,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:37,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:37,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:37,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:37,715 INFO L87 Difference]: Start difference. First operand 664 states and 1108 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:37,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:37,780 INFO L93 Difference]: Finished difference Result 1331 states and 2222 transitions. [2025-03-03 14:11:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:37,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2025-03-03 14:11:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:37,785 INFO L225 Difference]: With dead ends: 1331 [2025-03-03 14:11:37,785 INFO L226 Difference]: Without dead ends: 675 [2025-03-03 14:11:37,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 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 14:11:37,789 INFO L435 NwaCegarLoop]: 977 mSDtfsCounter, 12 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:37,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2922 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2025-03-03 14:11:37,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2025-03-03 14:11:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 540 states have (on average 1.6851851851851851) internal successors, (910), 560 states have internal predecessors, (910), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2025-03-03 14:11:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1116 transitions. [2025-03-03 14:11:37,811 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1116 transitions. Word has length 88 [2025-03-03 14:11:37,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:37,812 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1116 transitions. [2025-03-03 14:11:37,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:37,812 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1116 transitions. [2025-03-03 14:11:37,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:11:37,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:37,814 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:37,821 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 14:11:38,014 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 14:11:38,015 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:38,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:38,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1503955561, now seen corresponding path program 1 times [2025-03-03 14:11:38,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:38,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913837285] [2025-03-03 14:11:38,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:38,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:11:38,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:11:38,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:38,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:11:38,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:38,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913837285] [2025-03-03 14:11:38,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913837285] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:38,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784074531] [2025-03-03 14:11:38,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:38,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:38,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:38,170 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 14:11:38,171 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 14:11:38,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:11:38,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:11:38,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:38,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:38,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:38,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 14:11:38,414 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:38,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784074531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:38,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-03 14:11:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947816469] [2025-03-03 14:11:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:38,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:38,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:38,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:38,415 INFO L87 Difference]: Start difference. First operand 673 states and 1116 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:38,519 INFO L93 Difference]: Finished difference Result 1346 states and 2235 transitions. [2025-03-03 14:11:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2025-03-03 14:11:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:38,525 INFO L225 Difference]: With dead ends: 1346 [2025-03-03 14:11:38,525 INFO L226 Difference]: Without dead ends: 696 [2025-03-03 14:11:38,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 84 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 14:11:38,528 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 100 mSDsluCounter, 4776 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:38,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5752 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2025-03-03 14:11:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2025-03-03 14:11:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 540 states have (on average 1.6851851851851851) internal successors, (910), 560 states have internal predecessors, (910), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2025-03-03 14:11:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1116 transitions. [2025-03-03 14:11:38,554 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1116 transitions. Word has length 88 [2025-03-03 14:11:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:38,554 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1116 transitions. [2025-03-03 14:11:38,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1116 transitions. [2025-03-03 14:11:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-03 14:11:38,557 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:38,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:38,564 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 14:11:38,757 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 14:11:38,757 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:38,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -993751691, now seen corresponding path program 1 times [2025-03-03 14:11:38,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:38,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143771638] [2025-03-03 14:11:38,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:38,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-03 14:11:38,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-03 14:11:38,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:38,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:38,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:38,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143771638] [2025-03-03 14:11:38,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143771638] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:38,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208237600] [2025-03-03 14:11:38,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:38,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:38,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:38,894 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 14:11:38,896 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 14:11:38,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-03 14:11:39,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-03 14:11:39,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:39,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:39,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:39,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:39,174 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:11:39,174 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208237600] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:39,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:39,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-03 14:11:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459950656] [2025-03-03 14:11:39,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:39,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:39,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:39,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:39,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:39,176 INFO L87 Difference]: Start difference. First operand 673 states and 1116 transitions. Second operand has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:39,264 INFO L93 Difference]: Finished difference Result 1346 states and 2235 transitions. [2025-03-03 14:11:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2025-03-03 14:11:39,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:39,269 INFO L225 Difference]: With dead ends: 1346 [2025-03-03 14:11:39,269 INFO L226 Difference]: Without dead ends: 696 [2025-03-03 14:11:39,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 101 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 14:11:39,272 INFO L435 NwaCegarLoop]: 976 mSDtfsCounter, 111 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 5740 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:39,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 5740 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2025-03-03 14:11:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2025-03-03 14:11:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 540 states have (on average 1.6851851851851851) internal successors, (910), 560 states have internal predecessors, (910), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2025-03-03 14:11:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1116 transitions. [2025-03-03 14:11:39,295 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1116 transitions. Word has length 105 [2025-03-03 14:11:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:39,296 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1116 transitions. [2025-03-03 14:11:39,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1116 transitions. [2025-03-03 14:11:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-03-03 14:11:39,298 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:39,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:39,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:39,498 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 14:11:39,499 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:39,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1372697026, now seen corresponding path program 1 times [2025-03-03 14:11:39,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:39,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707927344] [2025-03-03 14:11:39,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:39,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:39,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-03 14:11:39,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-03 14:11:39,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:39,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:39,613 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:39,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:39,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707927344] [2025-03-03 14:11:39,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707927344] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:39,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549165621] [2025-03-03 14:11:39,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:39,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:39,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:39,615 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 14:11:39,617 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 14:11:39,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-03 14:11:39,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-03 14:11:39,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:39,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:39,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:39,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:11:39,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:39,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549165621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:39,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:39,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:11:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141814255] [2025-03-03 14:11:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:39,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:39,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:39,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:39,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:39,904 INFO L87 Difference]: Start difference. First operand 673 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:40,038 INFO L93 Difference]: Finished difference Result 1349 states and 2239 transitions. [2025-03-03 14:11:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 105 [2025-03-03 14:11:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:40,044 INFO L225 Difference]: With dead ends: 1349 [2025-03-03 14:11:40,044 INFO L226 Difference]: Without dead ends: 699 [2025-03-03 14:11:40,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 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 14:11:40,047 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 95 mSDsluCounter, 5699 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6665 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:40,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 6665 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:40,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2025-03-03 14:11:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 673. [2025-03-03 14:11:40,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 540 states have (on average 1.6851851851851851) internal successors, (910), 560 states have internal predecessors, (910), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2025-03-03 14:11:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1116 transitions. [2025-03-03 14:11:40,069 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1116 transitions. Word has length 105 [2025-03-03 14:11:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:40,069 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1116 transitions. [2025-03-03 14:11:40,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1116 transitions. [2025-03-03 14:11:40,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-03-03 14:11:40,072 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:40,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:40,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 14:11:40,272 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 14:11:40,273 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:40,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1364508333, now seen corresponding path program 1 times [2025-03-03 14:11:40,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:40,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991977542] [2025-03-03 14:11:40,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:40,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:40,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-03 14:11:40,287 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-03 14:11:40,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:40,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:40,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991977542] [2025-03-03 14:11:40,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991977542] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:40,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648297384] [2025-03-03 14:11:40,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:40,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:40,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:40,376 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 14:11:40,377 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 14:11:40,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-03-03 14:11:40,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-03-03 14:11:40,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:40,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:40,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 1504 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:40,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:11:40,652 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:40,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648297384] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:40,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:40,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:11:40,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132740287] [2025-03-03 14:11:40,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:40,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:40,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:40,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:40,654 INFO L87 Difference]: Start difference. First operand 673 states and 1116 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:40,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:40,803 INFO L93 Difference]: Finished difference Result 1349 states and 2239 transitions. [2025-03-03 14:11:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:40,803 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 106 [2025-03-03 14:11:40,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:40,808 INFO L225 Difference]: With dead ends: 1349 [2025-03-03 14:11:40,808 INFO L226 Difference]: Without dead ends: 699 [2025-03-03 14:11:40,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 101 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 14:11:40,811 INFO L435 NwaCegarLoop]: 966 mSDtfsCounter, 105 mSDsluCounter, 5687 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 6653 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:40,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 6653 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2025-03-03 14:11:40,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 673. [2025-03-03 14:11:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 540 states have (on average 1.6851851851851851) internal successors, (910), 560 states have internal predecessors, (910), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2025-03-03 14:11:40,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1116 transitions. [2025-03-03 14:11:40,830 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1116 transitions. Word has length 106 [2025-03-03 14:11:40,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:40,830 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1116 transitions. [2025-03-03 14:11:40,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1116 transitions. [2025-03-03 14:11:40,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 14:11:40,832 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:40,832 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:40,840 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 14:11:41,033 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 14:11:41,033 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:41,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1604475647, now seen corresponding path program 1 times [2025-03-03 14:11:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807072951] [2025-03-03 14:11:41,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:41,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:41,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 14:11:41,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 14:11:41,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:41,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:41,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807072951] [2025-03-03 14:11:41,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807072951] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:41,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698648989] [2025-03-03 14:11:41,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:41,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:41,092 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 14:11:41,094 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 14:11:41,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 14:11:41,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 14:11:41,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:41,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:41,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:41,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:11:41,302 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:41,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698648989] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:41,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:41,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:41,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133555681] [2025-03-03 14:11:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:41,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:41,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:41,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:41,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:41,304 INFO L87 Difference]: Start difference. First operand 673 states and 1116 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:41,355 INFO L93 Difference]: Finished difference Result 1312 states and 2184 transitions. [2025-03-03 14:11:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2025-03-03 14:11:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:41,360 INFO L225 Difference]: With dead ends: 1312 [2025-03-03 14:11:41,361 INFO L226 Difference]: Without dead ends: 673 [2025-03-03 14:11:41,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 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 14:11:41,364 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 20 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:41,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2916 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2025-03-03 14:11:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2025-03-03 14:11:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 540 states have (on average 1.6759259259259258) internal successors, (905), 560 states have internal predecessors, (905), 103 states have call successors, (103), 29 states have call predecessors, (103), 29 states have return successors, (103), 97 states have call predecessors, (103), 100 states have call successors, (103) [2025-03-03 14:11:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1111 transitions. [2025-03-03 14:11:41,382 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1111 transitions. Word has length 91 [2025-03-03 14:11:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:41,382 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 1111 transitions. [2025-03-03 14:11:41,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:41,382 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1111 transitions. [2025-03-03 14:11:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-03 14:11:41,384 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:41,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:41,391 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 14:11:41,584 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 14:11:41,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:41,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:41,585 INFO L85 PathProgramCache]: Analyzing trace with hash -685451839, now seen corresponding path program 1 times [2025-03-03 14:11:41,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:41,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442107383] [2025-03-03 14:11:41,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:41,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:41,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-03 14:11:41,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-03 14:11:41,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:41,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:41,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:41,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442107383] [2025-03-03 14:11:41,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442107383] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:41,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238184054] [2025-03-03 14:11:41,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:41,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:41,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:41,657 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 14:11:41,659 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 14:11:41,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-03 14:11:41,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-03 14:11:41,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:41,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:41,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:41,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:11:41,911 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:41,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238184054] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:41,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:41,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:41,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831341873] [2025-03-03 14:11:41,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:41,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:41,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:41,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:41,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:41,912 INFO L87 Difference]: Start difference. First operand 673 states and 1111 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:11:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:42,052 INFO L93 Difference]: Finished difference Result 1341 states and 2224 transitions. [2025-03-03 14:11:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:42,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2025-03-03 14:11:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:42,058 INFO L225 Difference]: With dead ends: 1341 [2025-03-03 14:11:42,058 INFO L226 Difference]: Without dead ends: 760 [2025-03-03 14:11:42,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:42,061 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 171 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:42,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 2788 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2025-03-03 14:11:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 718. [2025-03-03 14:11:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 584 states have (on average 1.6934931506849316) internal successors, (989), 604 states have internal predecessors, (989), 103 states have call successors, (103), 30 states have call predecessors, (103), 30 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2025-03-03 14:11:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1194 transitions. [2025-03-03 14:11:42,078 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1194 transitions. Word has length 108 [2025-03-03 14:11:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:42,079 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1194 transitions. [2025-03-03 14:11:42,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:11:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1194 transitions. [2025-03-03 14:11:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-03 14:11:42,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:42,081 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] [2025-03-03 14:11:42,088 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 14:11:42,281 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 14:11:42,281 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:42,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:42,281 INFO L85 PathProgramCache]: Analyzing trace with hash 368143276, now seen corresponding path program 1 times [2025-03-03 14:11:42,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:42,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841033627] [2025-03-03 14:11:42,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:42,291 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-03 14:11:42,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-03 14:11:42,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:42,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:42,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:42,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841033627] [2025-03-03 14:11:42,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841033627] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:42,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541016663] [2025-03-03 14:11:42,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:42,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:42,347 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 14:11:42,348 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 14:11:42,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-03 14:11:42,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-03 14:11:42,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:42,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:42,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:42,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:42,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:42,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541016663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:42,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:42,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:11:42,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640970112] [2025-03-03 14:11:42,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:42,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:42,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:42,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:42,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:11:42,602 INFO L87 Difference]: Start difference. First operand 718 states and 1194 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:42,679 INFO L93 Difference]: Finished difference Result 1334 states and 2211 transitions. [2025-03-03 14:11:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:42,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2025-03-03 14:11:42,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:42,683 INFO L225 Difference]: With dead ends: 1334 [2025-03-03 14:11:42,684 INFO L226 Difference]: Without dead ends: 753 [2025-03-03 14:11:42,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 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 14:11:42,686 INFO L435 NwaCegarLoop]: 979 mSDtfsCounter, 89 mSDsluCounter, 4805 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5784 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:42,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 5784 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2025-03-03 14:11:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 731. [2025-03-03 14:11:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 594 states have (on average 1.6902356902356903) internal successors, (1004), 616 states have internal predecessors, (1004), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2025-03-03 14:11:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1213 transitions. [2025-03-03 14:11:42,704 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1213 transitions. Word has length 109 [2025-03-03 14:11:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:42,704 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1213 transitions. [2025-03-03 14:11:42,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1213 transitions. [2025-03-03 14:11:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 14:11:42,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:42,707 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:42,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:42,907 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 14:11:42,908 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:42,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash -823038321, now seen corresponding path program 1 times [2025-03-03 14:11:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:42,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352700849] [2025-03-03 14:11:42,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:42,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:11:42,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:11:42,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:42,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:42,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352700849] [2025-03-03 14:11:42,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352700849] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:42,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033712160] [2025-03-03 14:11:42,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:42,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:42,956 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 14:11:42,957 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 14:11:43,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:11:43,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:11:43,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:43,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:43,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:11:43,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:43,158 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:11:43,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:43,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033712160] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:43,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:43,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:11:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778992802] [2025-03-03 14:11:43,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:43,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:43,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:43,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:43,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:43,159 INFO L87 Difference]: Start difference. First operand 731 states and 1213 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:43,194 INFO L93 Difference]: Finished difference Result 1388 states and 2307 transitions. [2025-03-03 14:11:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:11:43,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2025-03-03 14:11:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:43,199 INFO L225 Difference]: With dead ends: 1388 [2025-03-03 14:11:43,199 INFO L226 Difference]: Without dead ends: 731 [2025-03-03 14:11:43,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 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 14:11:43,202 INFO L435 NwaCegarLoop]: 978 mSDtfsCounter, 2 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2925 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:43,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2925 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2025-03-03 14:11:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2025-03-03 14:11:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 594 states have (on average 1.6851851851851851) internal successors, (1001), 616 states have internal predecessors, (1001), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2025-03-03 14:11:43,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1210 transitions. [2025-03-03 14:11:43,219 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1210 transitions. Word has length 94 [2025-03-03 14:11:43,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:43,219 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1210 transitions. [2025-03-03 14:11:43,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 14:11:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1210 transitions. [2025-03-03 14:11:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-03-03 14:11:43,221 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:43,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:43,228 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 14:11:43,426 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 14:11:43,426 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:43,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1685971655, now seen corresponding path program 1 times [2025-03-03 14:11:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229499270] [2025-03-03 14:11:43,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:43,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-03 14:11:43,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-03 14:11:43,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:43,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:11:43,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229499270] [2025-03-03 14:11:43,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229499270] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652643232] [2025-03-03 14:11:43,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:43,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:43,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:43,489 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 14:11:43,490 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 14:11:43,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-03 14:11:43,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-03 14:11:43,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:43,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:43,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:11:43,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:11:43,764 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:43,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652643232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:43,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:43,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:11:43,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546185203] [2025-03-03 14:11:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:43,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:43,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:43,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:43,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:11:43,765 INFO L87 Difference]: Start difference. First operand 731 states and 1210 transitions. Second operand has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:43,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:43,833 INFO L93 Difference]: Finished difference Result 1343 states and 2222 transitions. [2025-03-03 14:11:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2025-03-03 14:11:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:43,837 INFO L225 Difference]: With dead ends: 1343 [2025-03-03 14:11:43,837 INFO L226 Difference]: Without dead ends: 762 [2025-03-03 14:11:43,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 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 14:11:43,839 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 100 mSDsluCounter, 4772 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5746 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:43,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5746 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2025-03-03 14:11:43,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 731. [2025-03-03 14:11:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 594 states have (on average 1.6851851851851851) internal successors, (1001), 616 states have internal predecessors, (1001), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2025-03-03 14:11:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1210 transitions. [2025-03-03 14:11:43,857 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1210 transitions. Word has length 110 [2025-03-03 14:11:43,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:43,857 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1210 transitions. [2025-03-03 14:11:43,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:11:43,857 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1210 transitions. [2025-03-03 14:11:43,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 14:11:43,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:43,859 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:43,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:44,059 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 14:11:44,059 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:44,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash 83787787, now seen corresponding path program 1 times [2025-03-03 14:11:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:44,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589558021] [2025-03-03 14:11:44,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:44,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:11:44,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:11:44,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:44,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:11:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:44,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589558021] [2025-03-03 14:11:44,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589558021] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:44,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669720288] [2025-03-03 14:11:44,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:44,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:44,121 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 14:11:44,128 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 14:11:44,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:11:44,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:11:44,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:44,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:44,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:44,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 14:11:44,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669720288] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:44,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:44,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:11:44,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268164184] [2025-03-03 14:11:44,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:44,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:44,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:44,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:44,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:44,370 INFO L87 Difference]: Start difference. First operand 731 states and 1210 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:44,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:44,482 INFO L93 Difference]: Finished difference Result 1346 states and 2225 transitions. [2025-03-03 14:11:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:44,482 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2025-03-03 14:11:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:44,486 INFO L225 Difference]: With dead ends: 1346 [2025-03-03 14:11:44,486 INFO L226 Difference]: Without dead ends: 765 [2025-03-03 14:11:44,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 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 14:11:44,489 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 96 mSDsluCounter, 5693 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 6657 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:44,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 6657 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2025-03-03 14:11:44,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 731. [2025-03-03 14:11:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 594 states have (on average 1.6851851851851851) internal successors, (1001), 616 states have internal predecessors, (1001), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2025-03-03 14:11:44,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1210 transitions. [2025-03-03 14:11:44,507 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1210 transitions. Word has length 94 [2025-03-03 14:11:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:44,508 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1210 transitions. [2025-03-03 14:11:44,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1210 transitions. [2025-03-03 14:11:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-03 14:11:44,509 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:44,509 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:44,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-03 14:11:44,710 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 14:11:44,710 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:44,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1398118096, now seen corresponding path program 1 times [2025-03-03 14:11:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648962766] [2025-03-03 14:11:44,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:44,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 14:11:44,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 14:11:44,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:44,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:11:44,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648962766] [2025-03-03 14:11:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648962766] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:44,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606655771] [2025-03-03 14:11:44,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:44,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:44,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:44,763 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 14:11:44,764 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 14:11:44,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-03 14:11:44,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-03 14:11:44,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:44,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:44,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 1264 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:44,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 14:11:45,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:45,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606655771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:45,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:45,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:11:45,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419333725] [2025-03-03 14:11:45,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:45,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:45,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:45,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:45,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:45,032 INFO L87 Difference]: Start difference. First operand 731 states and 1210 transitions. Second operand has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:45,151 INFO L93 Difference]: Finished difference Result 1337 states and 2211 transitions. [2025-03-03 14:11:45,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 95 [2025-03-03 14:11:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:45,156 INFO L225 Difference]: With dead ends: 1337 [2025-03-03 14:11:45,156 INFO L226 Difference]: Without dead ends: 756 [2025-03-03 14:11:45,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:11:45,160 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 106 mSDsluCounter, 5681 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6645 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:45,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 6645 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2025-03-03 14:11:45,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 731. [2025-03-03 14:11:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 594 states have (on average 1.6851851851851851) internal successors, (1001), 616 states have internal predecessors, (1001), 104 states have call successors, (104), 30 states have call predecessors, (104), 32 states have return successors, (105), 98 states have call predecessors, (105), 101 states have call successors, (105) [2025-03-03 14:11:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1210 transitions. [2025-03-03 14:11:45,186 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1210 transitions. Word has length 95 [2025-03-03 14:11:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:45,186 INFO L471 AbstractCegarLoop]: Abstraction has 731 states and 1210 transitions. [2025-03-03 14:11:45,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 14:11:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1210 transitions. [2025-03-03 14:11:45,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-03-03 14:11:45,189 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:45,189 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, 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] [2025-03-03 14:11:45,197 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 14:11:45,389 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 14:11:45,390 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:45,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1922026312, now seen corresponding path program 1 times [2025-03-03 14:11:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:45,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357237556] [2025-03-03 14:11:45,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:45,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-03 14:11:45,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-03 14:11:45,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:45,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:45,466 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:45,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:45,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357237556] [2025-03-03 14:11:45,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357237556] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:45,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051568113] [2025-03-03 14:11:45,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:45,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:45,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:45,469 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 14:11:45,470 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 14:11:45,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 112 statements into 1 equivalence classes. [2025-03-03 14:11:45,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 112 of 112 statements. [2025-03-03 14:11:45,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:45,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:45,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:11:45,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:45,915 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 14:11:45,916 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:45,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051568113] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:45,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:45,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2025-03-03 14:11:45,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548033289] [2025-03-03 14:11:45,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:45,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:11:45,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:45,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:11:45,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:11:45,918 INFO L87 Difference]: Start difference. First operand 731 states and 1210 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:11:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:48,379 INFO L93 Difference]: Finished difference Result 2511 states and 4202 transitions. [2025-03-03 14:11:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:11:48,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2025-03-03 14:11:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:48,387 INFO L225 Difference]: With dead ends: 2511 [2025-03-03 14:11:48,387 INFO L226 Difference]: Without dead ends: 1934 [2025-03-03 14:11:48,389 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:11:48,389 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 3842 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 3617 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4036 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 4233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 3617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:48,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4036 Valid, 1368 Invalid, 4233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 3617 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-03 14:11:48,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2025-03-03 14:11:48,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1767. [2025-03-03 14:11:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1767 states, 1428 states have (on average 1.6799719887955182) internal successors, (2399), 1466 states have internal predecessors, (2399), 269 states have call successors, (269), 66 states have call predecessors, (269), 69 states have return successors, (290), 249 states have call predecessors, (290), 265 states have call successors, (290) [2025-03-03 14:11:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1767 states to 1767 states and 2958 transitions. [2025-03-03 14:11:48,446 INFO L78 Accepts]: Start accepts. Automaton has 1767 states and 2958 transitions. Word has length 112 [2025-03-03 14:11:48,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:48,446 INFO L471 AbstractCegarLoop]: Abstraction has 1767 states and 2958 transitions. [2025-03-03 14:11:48,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-03 14:11:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1767 states and 2958 transitions. [2025-03-03 14:11:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-03 14:11:48,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:48,451 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] [2025-03-03 14:11:48,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-03 14:11:48,651 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 14:11:48,652 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:48,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash 177569330, now seen corresponding path program 1 times [2025-03-03 14:11:48,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:48,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246316409] [2025-03-03 14:11:48,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:48,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-03 14:11:48,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 14:11:48,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:48,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:11:48,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:48,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246316409] [2025-03-03 14:11:48,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246316409] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:48,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639656447] [2025-03-03 14:11:48,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:48,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:48,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:48,714 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 14:11:48,715 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 14:11:48,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-03 14:11:48,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-03 14:11:48,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:48,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:48,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:11:48,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 14:11:48,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:48,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639656447] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:48,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:48,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-03 14:11:48,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921457969] [2025-03-03 14:11:48,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:48,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:48,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:48,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:48,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:11:48,953 INFO L87 Difference]: Start difference. First operand 1767 states and 2958 transitions. Second operand has 4 states, 4 states have (on average 22.5) 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, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:11:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:49,035 INFO L93 Difference]: Finished difference Result 3511 states and 5892 transitions. [2025-03-03 14:11:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) 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, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2025-03-03 14:11:49,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:49,043 INFO L225 Difference]: With dead ends: 3511 [2025-03-03 14:11:49,043 INFO L226 Difference]: Without dead ends: 1732 [2025-03-03 14:11:49,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 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 14:11:49,047 INFO L435 NwaCegarLoop]: 975 mSDtfsCounter, 7 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2917 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:49,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2917 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:49,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2025-03-03 14:11:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1732. [2025-03-03 14:11:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1396 states have (on average 1.6712034383954155) internal successors, (2333), 1432 states have internal predecessors, (2333), 268 states have call successors, (268), 66 states have call predecessors, (268), 67 states have return successors, (287), 248 states have call predecessors, (287), 264 states have call successors, (287) [2025-03-03 14:11:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2888 transitions. [2025-03-03 14:11:49,094 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2888 transitions. Word has length 134 [2025-03-03 14:11:49,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:49,095 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2888 transitions. [2025-03-03 14:11:49,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) 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, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:11:49,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2888 transitions. [2025-03-03 14:11:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2025-03-03 14:11:49,098 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:49,098 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, 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] [2025-03-03 14:11:49,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:49,299 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 14:11:49,299 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:49,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 522569803, now seen corresponding path program 1 times [2025-03-03 14:11:49,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:49,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443724744] [2025-03-03 14:11:49,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:49,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:49,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 186 statements into 1 equivalence classes. [2025-03-03 14:11:49,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 186 of 186 statements. [2025-03-03 14:11:49,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:49,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-03 14:11:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443724744] [2025-03-03 14:11:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443724744] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:49,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080437311] [2025-03-03 14:11:49,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:49,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:49,429 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 14:11:49,431 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 14:11:49,548 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 186 statements into 1 equivalence classes. [2025-03-03 14:11:49,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 186 of 186 statements. [2025-03-03 14:11:49,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:49,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:49,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:11:49,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-03-03 14:11:49,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:11:49,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080437311] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:49,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:11:49,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:11:49,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459863149] [2025-03-03 14:11:49,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:49,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:11:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:49,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:11:49,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:11:49,759 INFO L87 Difference]: Start difference. First operand 1732 states and 2888 transitions. Second operand has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:11:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:49,917 INFO L93 Difference]: Finished difference Result 3465 states and 5777 transitions. [2025-03-03 14:11:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:11:49,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 186 [2025-03-03 14:11:49,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:49,928 INFO L225 Difference]: With dead ends: 3465 [2025-03-03 14:11:49,928 INFO L226 Difference]: Without dead ends: 1763 [2025-03-03 14:11:49,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 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 14:11:49,935 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 111 mSDsluCounter, 5659 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 6622 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:49,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 6622 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:11:49,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2025-03-03 14:11:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1732. [2025-03-03 14:11:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1396 states have (on average 1.670487106017192) internal successors, (2332), 1432 states have internal predecessors, (2332), 268 states have call successors, (268), 66 states have call predecessors, (268), 67 states have return successors, (287), 248 states have call predecessors, (287), 264 states have call successors, (287) [2025-03-03 14:11:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2887 transitions. [2025-03-03 14:11:49,994 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2887 transitions. Word has length 186 [2025-03-03 14:11:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:49,995 INFO L471 AbstractCegarLoop]: Abstraction has 1732 states and 2887 transitions. [2025-03-03 14:11:49,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 14:11:49,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2887 transitions. [2025-03-03 14:11:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:11:50,021 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:50,021 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, 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] [2025-03-03 14:11:50,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-03-03 14:11:50,223 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 14:11:50,223 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:50,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:50,223 INFO L85 PathProgramCache]: Analyzing trace with hash -908879517, now seen corresponding path program 1 times [2025-03-03 14:11:50,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:50,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328496837] [2025-03-03 14:11:50,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:50,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:50,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:11:50,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:11:50,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:50,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:50,353 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-03 14:11:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328496837] [2025-03-03 14:11:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328496837] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:11:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109259435] [2025-03-03 14:11:50,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:50,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:11:50,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:11:50,355 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 14:11:50,357 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 14:11:50,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:11:50,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:11:50,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:50,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:50,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 2200 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 14:11:50,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:11:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:11:50,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:11:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-03-03 14:11:50,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109259435] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:11:50,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:11:50,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2025-03-03 14:11:50,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642593543] [2025-03-03 14:11:50,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:11:50,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 14:11:50,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:50,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 14:11:50,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:11:50,943 INFO L87 Difference]: Start difference. First operand 1732 states and 2887 transitions. Second operand has 11 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 7 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2025-03-03 14:11:53,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:53,759 INFO L93 Difference]: Finished difference Result 5120 states and 8512 transitions. [2025-03-03 14:11:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-03 14:11:53,761 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 7 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 188 [2025-03-03 14:11:53,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:53,777 INFO L225 Difference]: With dead ends: 5120 [2025-03-03 14:11:53,777 INFO L226 Difference]: Without dead ends: 3405 [2025-03-03 14:11:53,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 377 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2025-03-03 14:11:53,786 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 1754 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 7171 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 7482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 7171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:53,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 2888 Invalid, 7482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 7171 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-03-03 14:11:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3405 states. [2025-03-03 14:11:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3405 to 2911. [2025-03-03 14:11:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2911 states, 2322 states have (on average 1.6408268733850129) internal successors, (3810), 2373 states have internal predecessors, (3810), 467 states have call successors, (467), 110 states have call predecessors, (467), 121 states have return successors, (548), 440 states have call predecessors, (548), 461 states have call successors, (548) [2025-03-03 14:11:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 4825 transitions. [2025-03-03 14:11:53,914 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 4825 transitions. Word has length 188 [2025-03-03 14:11:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:53,915 INFO L471 AbstractCegarLoop]: Abstraction has 2911 states and 4825 transitions. [2025-03-03 14:11:53,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 7 states have call successors, (39), 5 states have call predecessors, (39), 6 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2025-03-03 14:11:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 4825 transitions. [2025-03-03 14:11:53,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:11:53,919 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:53,920 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:11:53,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-03 14:11:54,120 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 14:11:54,122 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:54,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:54,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2044871456, now seen corresponding path program 1 times [2025-03-03 14:11:54,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729402344] [2025-03-03 14:11:54,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:54,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:54,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:11:54,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:11:54,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:54,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-03 14:11:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729402344] [2025-03-03 14:11:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729402344] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:54,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:11:54,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:11:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569735913] [2025-03-03 14:11:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:54,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:11:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:54,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:11:54,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:11:54,199 INFO L87 Difference]: Start difference. First operand 2911 states and 4825 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, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:11:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:54,277 INFO L93 Difference]: Finished difference Result 5777 states and 9593 transitions. [2025-03-03 14:11:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:11:54,278 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, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2025-03-03 14:11:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:54,292 INFO L225 Difference]: With dead ends: 5777 [2025-03-03 14:11:54,292 INFO L226 Difference]: Without dead ends: 2883 [2025-03-03 14:11:54,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:11:54,303 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 8 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:54,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2916 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2025-03-03 14:11:54,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2883. [2025-03-03 14:11:54,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2297 states have (on average 1.6390944710491946) internal successors, (3765), 2346 states have internal predecessors, (3765), 466 states have call successors, (466), 110 states have call predecessors, (466), 119 states have return successors, (545), 439 states have call predecessors, (545), 460 states have call successors, (545) [2025-03-03 14:11:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 4776 transitions. [2025-03-03 14:11:54,386 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 4776 transitions. Word has length 136 [2025-03-03 14:11:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:54,386 INFO L471 AbstractCegarLoop]: Abstraction has 2883 states and 4776 transitions. [2025-03-03 14:11:54,387 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, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-03 14:11:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 4776 transitions. [2025-03-03 14:11:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2025-03-03 14:11:54,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:54,392 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, 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] [2025-03-03 14:11:54,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-03 14:11:54,392 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:54,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1427098302, now seen corresponding path program 1 times [2025-03-03 14:11:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:54,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430434699] [2025-03-03 14:11:54,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:54,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 188 statements into 1 equivalence classes. [2025-03-03 14:11:54,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 188 of 188 statements. [2025-03-03 14:11:54,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:54,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-03-03 14:11:54,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:54,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430434699] [2025-03-03 14:11:54,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430434699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:54,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:11:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:11:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864858548] [2025-03-03 14:11:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:54,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:54,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:54,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:54,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:54,583 INFO L87 Difference]: Start difference. First operand 2883 states and 4776 transitions. Second operand has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:11:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:54,685 INFO L93 Difference]: Finished difference Result 5731 states and 9509 transitions. [2025-03-03 14:11:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:54,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 188 [2025-03-03 14:11:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:54,705 INFO L225 Difference]: With dead ends: 5731 [2025-03-03 14:11:54,705 INFO L226 Difference]: Without dead ends: 2905 [2025-03-03 14:11:54,714 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 14:11:54,714 INFO L435 NwaCegarLoop]: 973 mSDtfsCounter, 126 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 5713 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:54,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 5713 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:11:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2905 states. [2025-03-03 14:11:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2905 to 2869. [2025-03-03 14:11:54,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2283 states have (on average 1.6368812965396409) internal successors, (3737), 2332 states have internal predecessors, (3737), 466 states have call successors, (466), 110 states have call predecessors, (466), 119 states have return successors, (545), 439 states have call predecessors, (545), 460 states have call successors, (545) [2025-03-03 14:11:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4748 transitions. [2025-03-03 14:11:54,799 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4748 transitions. Word has length 188 [2025-03-03 14:11:54,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:54,799 INFO L471 AbstractCegarLoop]: Abstraction has 2869 states and 4748 transitions. [2025-03-03 14:11:54,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-03 14:11:54,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4748 transitions. [2025-03-03 14:11:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-03 14:11:54,804 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:54,804 INFO L218 NwaCegarLoop]: trace histogram [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 14:11:54,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 14:11:54,804 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:54,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash 458264837, now seen corresponding path program 1 times [2025-03-03 14:11:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943164607] [2025-03-03 14:11:54,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:54,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:11:54,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:11:54,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:54,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:11:54,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:54,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943164607] [2025-03-03 14:11:54,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943164607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:54,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:11:54,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:11:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710806512] [2025-03-03 14:11:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:54,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:11:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:54,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:11:54,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:11:54,908 INFO L87 Difference]: Start difference. First operand 2869 states and 4748 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:11:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:11:57,482 INFO L93 Difference]: Finished difference Result 8092 states and 13899 transitions. [2025-03-03 14:11:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:11:57,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2025-03-03 14:11:57,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:11:57,510 INFO L225 Difference]: With dead ends: 8092 [2025-03-03 14:11:57,510 INFO L226 Difference]: Without dead ends: 5293 [2025-03-03 14:11:57,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:11:57,525 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 4137 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 4258 mSolverCounterSat, 1178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4175 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 5436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1178 IncrementalHoareTripleChecker+Valid, 4258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:11:57,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4175 Valid, 2030 Invalid, 5436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1178 Valid, 4258 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-03 14:11:57,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2025-03-03 14:11:57,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 4890. [2025-03-03 14:11:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4890 states, 3833 states have (on average 1.6133576832768066) internal successors, (6184), 3935 states have internal predecessors, (6184), 851 states have call successors, (851), 178 states have call predecessors, (851), 205 states have return successors, (1062), 818 states have call predecessors, (1062), 843 states have call successors, (1062) [2025-03-03 14:11:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4890 states to 4890 states and 8097 transitions. [2025-03-03 14:11:57,716 INFO L78 Accepts]: Start accepts. Automaton has 4890 states and 8097 transitions. Word has length 137 [2025-03-03 14:11:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:11:57,717 INFO L471 AbstractCegarLoop]: Abstraction has 4890 states and 8097 transitions. [2025-03-03 14:11:57,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:11:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4890 states and 8097 transitions. [2025-03-03 14:11:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2025-03-03 14:11:57,722 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:11:57,722 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, 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] [2025-03-03 14:11:57,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-03 14:11:57,722 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:11:57,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:11:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1340708340, now seen corresponding path program 1 times [2025-03-03 14:11:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:11:57,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655419342] [2025-03-03 14:11:57,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:11:57,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:11:57,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 191 statements into 1 equivalence classes. [2025-03-03 14:11:57,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 191 of 191 statements. [2025-03-03 14:11:57,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:11:57,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:11:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-03 14:11:57,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:11:57,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655419342] [2025-03-03 14:11:57,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655419342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:11:57,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:11:57,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:11:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877541311] [2025-03-03 14:11:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:11:57,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:11:57,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:11:57,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:11:57,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:11:57,927 INFO L87 Difference]: Start difference. First operand 4890 states and 8097 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-03 14:12:00,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:00,805 INFO L93 Difference]: Finished difference Result 11654 states and 19453 transitions. [2025-03-03 14:12:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 14:12:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 191 [2025-03-03 14:12:00,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:00,833 INFO L225 Difference]: With dead ends: 11654 [2025-03-03 14:12:00,833 INFO L226 Difference]: Without dead ends: 6834 [2025-03-03 14:12:00,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-03-03 14:12:00,849 INFO L435 NwaCegarLoop]: 638 mSDtfsCounter, 2328 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 5992 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2426 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 6614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 5992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:00,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2426 Valid, 2201 Invalid, 6614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 5992 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-03 14:12:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2025-03-03 14:12:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 6300. [2025-03-03 14:12:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6300 states, 4762 states have (on average 1.5844183116337673) internal successors, (7545), 4934 states have internal predecessors, (7545), 1299 states have call successors, (1299), 195 states have call predecessors, (1299), 238 states have return successors, (1577), 1286 states have call predecessors, (1577), 1291 states have call successors, (1577) [2025-03-03 14:12:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 10421 transitions. [2025-03-03 14:12:01,077 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 10421 transitions. Word has length 191 [2025-03-03 14:12:01,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:01,077 INFO L471 AbstractCegarLoop]: Abstraction has 6300 states and 10421 transitions. [2025-03-03 14:12:01,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-03 14:12:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 10421 transitions. [2025-03-03 14:12:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-03 14:12:01,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:01,080 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:12:01,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-03 14:12:01,080 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:01,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:01,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2128283210, now seen corresponding path program 1 times [2025-03-03 14:12:01,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:01,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139163873] [2025-03-03 14:12:01,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:01,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:01,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-03 14:12:01,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-03 14:12:01,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:01,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:12:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139163873] [2025-03-03 14:12:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139163873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:12:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:12:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441504297] [2025-03-03 14:12:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:01,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:12:01,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:01,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:12:01,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:12:01,222 INFO L87 Difference]: Start difference. First operand 6300 states and 10421 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:12:03,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:03,981 INFO L93 Difference]: Finished difference Result 20917 states and 36513 transitions. [2025-03-03 14:12:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:12:03,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 138 [2025-03-03 14:12:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:04,041 INFO L225 Difference]: With dead ends: 20917 [2025-03-03 14:12:04,041 INFO L226 Difference]: Without dead ends: 14687 [2025-03-03 14:12:04,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:12:04,073 INFO L435 NwaCegarLoop]: 857 mSDtfsCounter, 4185 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 4223 mSolverCounterSat, 1213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4224 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 5436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 4223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:04,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4224 Valid, 2033 Invalid, 5436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1213 Valid, 4223 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-03 14:12:04,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14687 states. [2025-03-03 14:12:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14687 to 13381. [2025-03-03 14:12:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13381 states, 9658 states have (on average 1.5558086560364466) internal successors, (15026), 10124 states have internal predecessors, (15026), 3229 states have call successors, (3229), 341 states have call predecessors, (3229), 493 states have return successors, (4207), 3282 states have call predecessors, (4207), 3217 states have call successors, (4207) [2025-03-03 14:12:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13381 states to 13381 states and 22462 transitions. [2025-03-03 14:12:04,694 INFO L78 Accepts]: Start accepts. Automaton has 13381 states and 22462 transitions. Word has length 138 [2025-03-03 14:12:04,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:04,694 INFO L471 AbstractCegarLoop]: Abstraction has 13381 states and 22462 transitions. [2025-03-03 14:12:04,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:12:04,694 INFO L276 IsEmpty]: Start isEmpty. Operand 13381 states and 22462 transitions. [2025-03-03 14:12:04,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-03 14:12:04,697 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:04,697 INFO L218 NwaCegarLoop]: trace histogram [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 14:12:04,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-03 14:12:04,697 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:04,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1981888672, now seen corresponding path program 1 times [2025-03-03 14:12:04,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:04,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225954680] [2025-03-03 14:12:04,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:04,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:04,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-03 14:12:04,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-03 14:12:04,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:04,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:12:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:04,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225954680] [2025-03-03 14:12:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225954680] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:04,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:12:04,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:12:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895798197] [2025-03-03 14:12:04,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:04,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:12:04,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:04,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:12:04,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:12:04,855 INFO L87 Difference]: Start difference. First operand 13381 states and 22462 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:12:09,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:09,226 INFO L93 Difference]: Finished difference Result 49703 states and 89463 transitions. [2025-03-03 14:12:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:12:09,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 139 [2025-03-03 14:12:09,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:09,416 INFO L225 Difference]: With dead ends: 49703 [2025-03-03 14:12:09,416 INFO L226 Difference]: Without dead ends: 36392 [2025-03-03 14:12:09,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:12:09,508 INFO L435 NwaCegarLoop]: 863 mSDtfsCounter, 4217 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 1224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1224 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:09,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 2059 Invalid, 5453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1224 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-03-03 14:12:09,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36392 states. [2025-03-03 14:12:11,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36392 to 32874. [2025-03-03 14:12:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32874 states, 22441 states have (on average 1.5298783476672162) internal successors, (34332), 23814 states have internal predecessors, (34332), 9267 states have call successors, (9267), 633 states have call predecessors, (9267), 1165 states have return successors, (12973), 9604 states have call predecessors, (12973), 9247 states have call successors, (12973) [2025-03-03 14:12:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32874 states to 32874 states and 56572 transitions. [2025-03-03 14:12:12,068 INFO L78 Accepts]: Start accepts. Automaton has 32874 states and 56572 transitions. Word has length 139 [2025-03-03 14:12:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:12,069 INFO L471 AbstractCegarLoop]: Abstraction has 32874 states and 56572 transitions. [2025-03-03 14:12:12,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:12:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 32874 states and 56572 transitions. [2025-03-03 14:12:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-03 14:12:12,073 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:12,073 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:12:12,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-03 14:12:12,073 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:12,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:12,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1281347377, now seen corresponding path program 1 times [2025-03-03 14:12:12,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:12,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829844868] [2025-03-03 14:12:12,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:12,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:12,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-03 14:12:12,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-03 14:12:12,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:12,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:12:12,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:12,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829844868] [2025-03-03 14:12:12,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829844868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:12,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:12:12,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:12:12,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596619960] [2025-03-03 14:12:12,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:12,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:12:12,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:12,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:12:12,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:12:12,193 INFO L87 Difference]: Start difference. First operand 32874 states and 56572 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:12:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:12:21,667 INFO L93 Difference]: Finished difference Result 134361 states and 250844 transitions. [2025-03-03 14:12:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:12:21,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 140 [2025-03-03 14:12:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:12:22,514 INFO L225 Difference]: With dead ends: 134361 [2025-03-03 14:12:22,514 INFO L226 Difference]: Without dead ends: 101557 [2025-03-03 14:12:22,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:12:22,876 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 4249 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 4239 mSolverCounterSat, 1233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1233 IncrementalHoareTripleChecker+Valid, 4239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:12:22,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 2085 Invalid, 5472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1233 Valid, 4239 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 14:12:22,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101557 states. [2025-03-03 14:12:29,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101557 to 91339. [2025-03-03 14:12:29,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91339 states, 59080 states have (on average 1.5091740013540962) internal successors, (89162), 63364 states have internal predecessors, (89162), 29137 states have call successors, (29137), 1217 states have call predecessors, (29137), 3121 states have return successors, (43793), 30634 states have call predecessors, (43793), 29101 states have call successors, (43793) [2025-03-03 14:12:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91339 states to 91339 states and 162092 transitions. [2025-03-03 14:12:30,182 INFO L78 Accepts]: Start accepts. Automaton has 91339 states and 162092 transitions. Word has length 140 [2025-03-03 14:12:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:12:30,183 INFO L471 AbstractCegarLoop]: Abstraction has 91339 states and 162092 transitions. [2025-03-03 14:12:30,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 6 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2025-03-03 14:12:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 91339 states and 162092 transitions. [2025-03-03 14:12:30,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-03 14:12:30,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:12:30,186 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:12:30,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-03 14:12:30,187 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:12:30,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:12:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash -374204807, now seen corresponding path program 1 times [2025-03-03 14:12:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:12:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087723716] [2025-03-03 14:12:30,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:12:30,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:12:30,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-03 14:12:30,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-03 14:12:30,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:12:30,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:12:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:12:30,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:12:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087723716] [2025-03-03 14:12:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087723716] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:12:30,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:12:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 14:12:30,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830062522] [2025-03-03 14:12:30,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:12:30,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 14:12:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:12:30,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 14:12:30,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:12:30,344 INFO L87 Difference]: Start difference. First operand 91339 states and 162092 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14)