./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product26.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 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 18:36:46,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 18:36:46,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 18:36:46,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 18:36:46,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 18:36:46,597 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 18:36:46,598 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 18:36:46,598 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 18:36:46,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 18:36:46,599 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 18:36:46,599 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 18:36:46,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 18:36:46,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 18:36:46,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 18:36:46,600 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 18:36:46,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 18:36:46,601 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 18:36:46,602 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 18:36:46,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 18:36:46,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 18:36:46,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 18:36:46,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 18:36:46,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:46,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 18:36:46,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 18:36:46,603 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 -> 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd [2025-03-16 18:36:46,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 18:36:46,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 18:36:46,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 18:36:46,831 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 18:36:46,831 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 18:36:46,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2025-03-16 18:36:47,981 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c41521945/96127710ac664c53810812a81efc78ad/FLAG6afbb5e23 [2025-03-16 18:36:48,300 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 18:36:48,302 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2025-03-16 18:36:48,321 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c41521945/96127710ac664c53810812a81efc78ad/FLAG6afbb5e23 [2025-03-16 18:36:48,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c41521945/96127710ac664c53810812a81efc78ad [2025-03-16 18:36:48,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 18:36:48,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 18:36:48,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:48,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 18:36:48,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 18:36:48,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:48,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c4a6df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48, skipping insertion in model container [2025-03-16 18:36:48,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:48,399 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 18:36:48,776 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2025-03-16 18:36:48,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:48,804 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 18:36:48,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2025-03-16 18:36:48,811 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [67] [2025-03-16 18:36:48,811 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [168] [2025-03-16 18:36:48,812 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [520] [2025-03-16 18:36:48,812 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2041] [2025-03-16 18:36:48,812 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2407] [2025-03-16 18:36:48,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3068] [2025-03-16 18:36:48,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3186] [2025-03-16 18:36:48,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3195] [2025-03-16 18:36:48,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3230] [2025-03-16 18:36:48,897 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2025-03-16 18:36:48,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 18:36:48,923 INFO L204 MainTranslator]: Completed translation [2025-03-16 18:36:48,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48 WrapperNode [2025-03-16 18:36:48,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 18:36:48,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:48,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 18:36:48,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 18:36:48,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:48,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:48,982 INFO L138 Inliner]: procedures = 91, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 859 [2025-03-16 18:36:48,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 18:36:48,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 18:36:48,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 18:36:48,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 18:36:48,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:48,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:48,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,024 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-16 18:36:49,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,049 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,051 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,069 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 18:36:49,074 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 18:36:49,074 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 18:36:49,075 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 18:36:49,075 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (1/1) ... [2025-03-16 18:36:49,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 18:36:49,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:49,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 18:36:49,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 18:36:49,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 18:36:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-16 18:36:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-16 18:36:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-16 18:36:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-16 18:36:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-16 18:36:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-16 18:36:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-16 18:36:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-16 18:36:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-16 18:36:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-16 18:36:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-16 18:36:49,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-16 18:36:49,123 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-16 18:36:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-16 18:36:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-16 18:36:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-16 18:36:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-16 18:36:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-16 18:36:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-16 18:36:49,124 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-16 18:36:49,124 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-16 18:36:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-16 18:36:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-16 18:36:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-16 18:36:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-16 18:36:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-16 18:36:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-16 18:36:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-16 18:36:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-16 18:36:49,125 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-16 18:36:49,125 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-16 18:36:49,126 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-16 18:36:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2025-03-16 18:36:49,126 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2025-03-16 18:36:49,126 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-16 18:36:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-16 18:36:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-16 18:36:49,127 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-16 18:36:49,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-16 18:36:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-16 18:36:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-16 18:36:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-16 18:36:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 18:36:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 18:36:49,128 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-16 18:36:49,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-16 18:36:49,273 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 18:36:49,274 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 18:36:49,314 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L827: #res := ~retValue_acc~6; [2025-03-16 18:36:49,349 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3183: #res := ~retValue_acc~23; [2025-03-16 18:36:49,369 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3105: #res := ~retValue_acc~21; [2025-03-16 18:36:49,373 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L602: #res := ~retValue_acc~2; [2025-03-16 18:36:49,658 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1312: #res := ~retValue_acc~10; [2025-03-16 18:36:49,785 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1402-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~12#1; [2025-03-16 18:36:49,839 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1416: #res := ~retValue_acc~13; [2025-03-16 18:36:49,849 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3144: #res := ~retValue_acc~22; [2025-03-16 18:36:49,869 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L818: #res := ~retValue_acc~5; [2025-03-16 18:36:49,908 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L867-1: isEmpty_#res#1 := isEmpty_~retValue_acc~7#1; [2025-03-16 18:36:49,976 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L775-1: getCurrentFloorID_#res#1 := getCurrentFloorID_~retValue_acc~3#1; [2025-03-16 18:36:49,976 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L784-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~4#1; [2025-03-16 18:36:50,032 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L960-1: isIdle_#res#1 := isIdle_~retValue_acc~9#1; [2025-03-16 18:36:50,033 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L947-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~8#1; [2025-03-16 18:36:50,080 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754: #res := ~retValue_acc~19; [2025-03-16 18:36:50,128 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3227-1: valid_product_#res#1 := valid_product_~retValue_acc~25#1; [2025-03-16 18:36:50,129 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L517-1: main_#res#1 := main_~retValue_acc~1#1; [2025-03-16 18:36:50,137 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2518: #res := ~retValue_acc~18; [2025-03-16 18:36:50,141 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3065: #res := ~retValue_acc~20; [2025-03-16 18:36:50,237 INFO L? ?]: Removed 450 outVars from TransFormulas that were not future-live. [2025-03-16 18:36:50,238 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 18:36:50,254 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 18:36:50,255 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 18:36:50,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:50 BoogieIcfgContainer [2025-03-16 18:36:50,255 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 18:36:50,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 18:36:50,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 18:36:50,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 18:36:50,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 06:36:48" (1/3) ... [2025-03-16 18:36:50,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b42193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:50, skipping insertion in model container [2025-03-16 18:36:50,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 06:36:48" (2/3) ... [2025-03-16 18:36:50,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b42193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 06:36:50, skipping insertion in model container [2025-03-16 18:36:50,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 06:36:50" (3/3) ... [2025-03-16 18:36:50,263 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2025-03-16 18:36:50,272 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 18:36:50,275 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product26.cil.c that has 26 procedures, 570 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 18:36:50,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 18:36:50,368 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;@1447ebd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 18:36:50,369 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 18:36:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 441 states have (on average 1.6961451247165533) internal successors, (748), 461 states have internal predecessors, (748), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-16 18:36:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-03-16 18:36:50,383 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:50,383 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:50,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:50,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash -117045823, now seen corresponding path program 1 times [2025-03-16 18:36:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:50,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033001111] [2025-03-16 18:36:50,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:50,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-16 18:36:50,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-16 18:36:50,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:50,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:50,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033001111] [2025-03-16 18:36:50,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033001111] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:50,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:50,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419290020] [2025-03-16 18:36:50,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:50,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:50,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:50,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:50,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:50,974 INFO L87 Difference]: Start difference. First operand has 570 states, 441 states have (on average 1.6961451247165533) internal successors, (748), 461 states have internal predecessors, (748), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:51,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:51,190 INFO L93 Difference]: Finished difference Result 1141 states and 1920 transitions. [2025-03-16 18:36:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:51,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2025-03-16 18:36:51,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:51,207 INFO L225 Difference]: With dead ends: 1141 [2025-03-16 18:36:51,208 INFO L226 Difference]: Without dead ends: 576 [2025-03-16 18:36:51,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:51,219 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 91 mSDsluCounter, 4599 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5536 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:51,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5536 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 18:36:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-16 18:36:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 574. [2025-03-16 18:36:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 445 states have (on average 1.6876404494382022) internal successors, (751), 465 states have internal predecessors, (751), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2025-03-16 18:36:51,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 956 transitions. [2025-03-16 18:36:51,315 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 956 transitions. Word has length 59 [2025-03-16 18:36:51,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:51,315 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 956 transitions. [2025-03-16 18:36:51,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:51,315 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 956 transitions. [2025-03-16 18:36:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 18:36:51,321 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:51,321 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:51,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 18:36:51,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:51,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 827815745, now seen corresponding path program 1 times [2025-03-16 18:36:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:51,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252060441] [2025-03-16 18:36:51,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:51,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 18:36:51,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 18:36:51,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:51,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:51,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:51,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252060441] [2025-03-16 18:36:51,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252060441] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:51,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:51,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524611822] [2025-03-16 18:36:51,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:51,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:51,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:51,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:51,476 INFO L87 Difference]: Start difference. First operand 574 states and 956 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:51,556 INFO L93 Difference]: Finished difference Result 1134 states and 1897 transitions. [2025-03-16 18:36:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:51,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2025-03-16 18:36:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:51,563 INFO L225 Difference]: With dead ends: 1134 [2025-03-16 18:36:51,563 INFO L226 Difference]: Without dead ends: 550 [2025-03-16 18:36:51,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:51,566 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 14 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:51,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2773 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:51,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-03-16 18:36:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2025-03-16 18:36:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 424 states have (on average 1.679245283018868) internal successors, (712), 442 states have internal predecessors, (712), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:51,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 913 transitions. [2025-03-16 18:36:51,607 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 913 transitions. Word has length 60 [2025-03-16 18:36:51,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:51,607 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 913 transitions. [2025-03-16 18:36:51,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:51,608 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 913 transitions. [2025-03-16 18:36:51,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-16 18:36:51,611 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:51,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:51,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 18:36:51,612 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:51,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1380140966, now seen corresponding path program 1 times [2025-03-16 18:36:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:51,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218582605] [2025-03-16 18:36:51,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:51,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-16 18:36:51,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-16 18:36:51,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:51,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:51,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:51,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218582605] [2025-03-16 18:36:51,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218582605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:51,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:51,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:51,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689345607] [2025-03-16 18:36:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:51,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:51,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:51,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:51,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:51,796 INFO L87 Difference]: Start difference. First operand 550 states and 913 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:51,881 INFO L93 Difference]: Finished difference Result 1097 states and 1829 transitions. [2025-03-16 18:36:51,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:51,882 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 60 [2025-03-16 18:36:51,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:51,885 INFO L225 Difference]: With dead ends: 1097 [2025-03-16 18:36:51,885 INFO L226 Difference]: Without dead ends: 544 [2025-03-16 18:36:51,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:51,887 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 77 mSDsluCounter, 4440 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5342 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:51,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5342 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:51,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2025-03-16 18:36:51,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2025-03-16 18:36:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 418 states have (on average 1.6722488038277512) internal successors, (699), 436 states have internal predecessors, (699), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:51,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 900 transitions. [2025-03-16 18:36:51,904 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 900 transitions. Word has length 60 [2025-03-16 18:36:51,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:51,904 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 900 transitions. [2025-03-16 18:36:51,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 900 transitions. [2025-03-16 18:36:51,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-16 18:36:51,905 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:51,906 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:51,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 18:36:51,906 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:51,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1173906501, now seen corresponding path program 1 times [2025-03-16 18:36:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131299494] [2025-03-16 18:36:51,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:51,924 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-16 18:36:51,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-16 18:36:51,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:51,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:52,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:52,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131299494] [2025-03-16 18:36:52,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131299494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:52,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:52,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:52,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769974552] [2025-03-16 18:36:52,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:52,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:52,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:52,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:52,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:52,104 INFO L87 Difference]: Start difference. First operand 544 states and 900 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:52,172 INFO L93 Difference]: Finished difference Result 1085 states and 1803 transitions. [2025-03-16 18:36:52,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:52,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2025-03-16 18:36:52,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:52,179 INFO L225 Difference]: With dead ends: 1085 [2025-03-16 18:36:52,179 INFO L226 Difference]: Without dead ends: 538 [2025-03-16 18:36:52,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:52,183 INFO L435 NwaCegarLoop]: 890 mSDtfsCounter, 63 mSDsluCounter, 4392 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5282 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:52,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5282 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2025-03-16 18:36:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2025-03-16 18:36:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 412 states have (on average 1.6650485436893203) internal successors, (686), 430 states have internal predecessors, (686), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:52,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 887 transitions. [2025-03-16 18:36:52,215 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 887 transitions. Word has length 61 [2025-03-16 18:36:52,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:52,215 INFO L471 AbstractCegarLoop]: Abstraction has 538 states and 887 transitions. [2025-03-16 18:36:52,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 887 transitions. [2025-03-16 18:36:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 18:36:52,217 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:52,217 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:52,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 18:36:52,217 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:52,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash -467197024, now seen corresponding path program 1 times [2025-03-16 18:36:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:52,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24733422] [2025-03-16 18:36:52,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:52,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:52,229 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 18:36:52,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 18:36:52,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:52,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:52,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24733422] [2025-03-16 18:36:52,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24733422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:52,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:52,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:52,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125440514] [2025-03-16 18:36:52,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:52,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:52,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:52,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:52,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:52,385 INFO L87 Difference]: Start difference. First operand 538 states and 887 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:52,456 INFO L93 Difference]: Finished difference Result 1073 states and 1777 transitions. [2025-03-16 18:36:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:52,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2025-03-16 18:36:52,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:52,461 INFO L225 Difference]: With dead ends: 1073 [2025-03-16 18:36:52,461 INFO L226 Difference]: Without dead ends: 532 [2025-03-16 18:36:52,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:52,464 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 49 mSDsluCounter, 4344 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:52,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5222 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:52,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-16 18:36:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-16 18:36:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 406 states have (on average 1.6576354679802956) internal successors, (673), 424 states have internal predecessors, (673), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 874 transitions. [2025-03-16 18:36:52,492 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 874 transitions. Word has length 62 [2025-03-16 18:36:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:52,492 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 874 transitions. [2025-03-16 18:36:52,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:52,493 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 874 transitions. [2025-03-16 18:36:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-16 18:36:52,494 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:52,494 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:52,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 18:36:52,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:52,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash 819816408, now seen corresponding path program 1 times [2025-03-16 18:36:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507705958] [2025-03-16 18:36:52,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:52,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-16 18:36:52,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-16 18:36:52,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:52,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:52,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507705958] [2025-03-16 18:36:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507705958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:52,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:52,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-16 18:36:52,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210902535] [2025-03-16 18:36:52,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:52,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 18:36:52,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:52,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 18:36:52,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-16 18:36:52,651 INFO L87 Difference]: Start difference. First operand 532 states and 874 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:52,709 INFO L93 Difference]: Finished difference Result 1061 states and 1751 transitions. [2025-03-16 18:36:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-16 18:36:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 62 [2025-03-16 18:36:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:52,714 INFO L225 Difference]: With dead ends: 1061 [2025-03-16 18:36:52,715 INFO L226 Difference]: Without dead ends: 532 [2025-03-16 18:36:52,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-16 18:36:52,718 INFO L435 NwaCegarLoop]: 866 mSDtfsCounter, 24 mSDsluCounter, 4308 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5174 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:52,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5174 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-16 18:36:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-16 18:36:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 406 states have (on average 1.6551724137931034) internal successors, (672), 424 states have internal predecessors, (672), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 873 transitions. [2025-03-16 18:36:52,742 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 873 transitions. Word has length 62 [2025-03-16 18:36:52,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:52,742 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 873 transitions. [2025-03-16 18:36:52,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:52,743 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 873 transitions. [2025-03-16 18:36:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-16 18:36:52,743 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:52,743 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:52,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 18:36:52,744 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:52,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1756237387, now seen corresponding path program 1 times [2025-03-16 18:36:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689649521] [2025-03-16 18:36:52,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:52,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-16 18:36:52,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-16 18:36:52,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:52,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689649521] [2025-03-16 18:36:52,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689649521] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:52,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:52,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:52,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445595696] [2025-03-16 18:36:52,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:52,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:52,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:52,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:52,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:52,837 INFO L87 Difference]: Start difference. First operand 532 states and 873 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:52,875 INFO L93 Difference]: Finished difference Result 1052 states and 1736 transitions. [2025-03-16 18:36:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:52,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2025-03-16 18:36:52,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:52,879 INFO L225 Difference]: With dead ends: 1052 [2025-03-16 18:36:52,879 INFO L226 Difference]: Without dead ends: 532 [2025-03-16 18:36:52,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:52,882 INFO L435 NwaCegarLoop]: 858 mSDtfsCounter, 15 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:52,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2559 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:52,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-16 18:36:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-16 18:36:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 406 states have (on average 1.6527093596059113) internal successors, (671), 424 states have internal predecessors, (671), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 872 transitions. [2025-03-16 18:36:52,914 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 872 transitions. Word has length 63 [2025-03-16 18:36:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:52,914 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 872 transitions. [2025-03-16 18:36:52,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 872 transitions. [2025-03-16 18:36:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-16 18:36:52,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:52,916 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:52,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 18:36:52,916 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:52,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1875162168, now seen corresponding path program 1 times [2025-03-16 18:36:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:52,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039120381] [2025-03-16 18:36:52,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:52,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:52,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-16 18:36:52,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-16 18:36:52,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:52,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:52,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039120381] [2025-03-16 18:36:52,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039120381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:52,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:52,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:52,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510312778] [2025-03-16 18:36:52,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:52,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:52,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:52,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:52,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:52,997 INFO L87 Difference]: Start difference. First operand 532 states and 872 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:53,036 INFO L93 Difference]: Finished difference Result 1052 states and 1734 transitions. [2025-03-16 18:36:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:53,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2025-03-16 18:36:53,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:53,040 INFO L225 Difference]: With dead ends: 1052 [2025-03-16 18:36:53,041 INFO L226 Difference]: Without dead ends: 532 [2025-03-16 18:36:53,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:53,043 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 14 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:53,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2561 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-16 18:36:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-16 18:36:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 406 states have (on average 1.6502463054187193) internal successors, (670), 424 states have internal predecessors, (670), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:53,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 871 transitions. [2025-03-16 18:36:53,060 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 871 transitions. Word has length 64 [2025-03-16 18:36:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:53,060 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 871 transitions. [2025-03-16 18:36:53,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 871 transitions. [2025-03-16 18:36:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-16 18:36:53,064 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:53,064 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:53,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 18:36:53,064 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:53,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash 852984600, now seen corresponding path program 1 times [2025-03-16 18:36:53,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:53,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841998732] [2025-03-16 18:36:53,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:53,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:53,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-16 18:36:53,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-16 18:36:53,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:53,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841998732] [2025-03-16 18:36:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841998732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379406949] [2025-03-16 18:36:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:53,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:53,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:53,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:53,140 INFO L87 Difference]: Start difference. First operand 532 states and 871 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:53,186 INFO L93 Difference]: Finished difference Result 1052 states and 1732 transitions. [2025-03-16 18:36:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:53,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-03-16 18:36:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:53,190 INFO L225 Difference]: With dead ends: 1052 [2025-03-16 18:36:53,190 INFO L226 Difference]: Without dead ends: 532 [2025-03-16 18:36:53,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:53,195 INFO L435 NwaCegarLoop]: 860 mSDtfsCounter, 13 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2563 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:53,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2563 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:53,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-16 18:36:53,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-16 18:36:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 406 states have (on average 1.6477832512315271) internal successors, (669), 424 states have internal predecessors, (669), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:53,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 870 transitions. [2025-03-16 18:36:53,217 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 870 transitions. Word has length 65 [2025-03-16 18:36:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:53,217 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 870 transitions. [2025-03-16 18:36:53,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:53,217 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 870 transitions. [2025-03-16 18:36:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-16 18:36:53,218 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:53,218 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:53,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 18:36:53,219 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:53,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1646036171, now seen corresponding path program 1 times [2025-03-16 18:36:53,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:53,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685109249] [2025-03-16 18:36:53,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:53,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:53,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-16 18:36:53,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-16 18:36:53,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:53,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:53,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:53,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685109249] [2025-03-16 18:36:53,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685109249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:53,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:53,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526754844] [2025-03-16 18:36:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:53,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:53,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:53,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:53,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:53,309 INFO L87 Difference]: Start difference. First operand 532 states and 870 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:53,345 INFO L93 Difference]: Finished difference Result 1052 states and 1730 transitions. [2025-03-16 18:36:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 18:36:53,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2025-03-16 18:36:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:53,351 INFO L225 Difference]: With dead ends: 1052 [2025-03-16 18:36:53,351 INFO L226 Difference]: Without dead ends: 532 [2025-03-16 18:36:53,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:53,354 INFO L435 NwaCegarLoop]: 861 mSDtfsCounter, 12 mSDsluCounter, 1704 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:53,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2565 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2025-03-16 18:36:53,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2025-03-16 18:36:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 406 states have (on average 1.645320197044335) internal successors, (668), 424 states have internal predecessors, (668), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-16 18:36:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 869 transitions. [2025-03-16 18:36:53,373 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 869 transitions. Word has length 66 [2025-03-16 18:36:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:53,374 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 869 transitions. [2025-03-16 18:36:53,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-16 18:36:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 869 transitions. [2025-03-16 18:36:53,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-16 18:36:53,375 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:53,375 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:53,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 18:36:53,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:53,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1714288517, now seen corresponding path program 1 times [2025-03-16 18:36:53,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222821699] [2025-03-16 18:36:53,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:53,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:36:53,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:36:53,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:53,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:53,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222821699] [2025-03-16 18:36:53,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222821699] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:53,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984841404] [2025-03-16 18:36:53,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:53,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:53,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:53,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:53,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 18:36:53,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-16 18:36:53,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-16 18:36:53,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:53,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:53,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:53,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:53,864 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:53,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984841404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:53,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:53,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-16 18:36:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380807694] [2025-03-16 18:36:53,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:53,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:53,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:53,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:53,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:53,865 INFO L87 Difference]: Start difference. First operand 532 states and 869 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:53,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:53,919 INFO L93 Difference]: Finished difference Result 1516 states and 2505 transitions. [2025-03-16 18:36:53,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:53,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2025-03-16 18:36:53,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:53,926 INFO L225 Difference]: With dead ends: 1516 [2025-03-16 18:36:53,927 INFO L226 Difference]: Without dead ends: 998 [2025-03-16 18:36:53,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:53,930 INFO L435 NwaCegarLoop]: 876 mSDtfsCounter, 836 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:53,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1644 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:53,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2025-03-16 18:36:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 983. [2025-03-16 18:36:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 758 states have (on average 1.6569920844327177) internal successors, (1256), 793 states have internal predecessors, (1256), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2025-03-16 18:36:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1618 transitions. [2025-03-16 18:36:53,968 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1618 transitions. Word has length 67 [2025-03-16 18:36:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:53,968 INFO L471 AbstractCegarLoop]: Abstraction has 983 states and 1618 transitions. [2025-03-16 18:36:53,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1618 transitions. [2025-03-16 18:36:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-16 18:36:53,970 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:53,970 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:53,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 18:36:54,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-16 18:36:54,171 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:54,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:54,171 INFO L85 PathProgramCache]: Analyzing trace with hash 642372158, now seen corresponding path program 1 times [2025-03-16 18:36:54,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:54,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835852865] [2025-03-16 18:36:54,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:54,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:54,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:36:54,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:36:54,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:54,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:54,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835852865] [2025-03-16 18:36:54,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835852865] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851169560] [2025-03-16 18:36:54,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:54,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:54,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:54,356 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:54,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 18:36:54,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-16 18:36:54,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-16 18:36:54,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:54,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:54,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 18:36:54,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:54,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851169560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:54,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-16 18:36:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191500695] [2025-03-16 18:36:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:54,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 18:36:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:54,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 18:36:54,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:54,662 INFO L87 Difference]: Start difference. First operand 983 states and 1618 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:54,724 INFO L93 Difference]: Finished difference Result 2418 states and 4005 transitions. [2025-03-16 18:36:54,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 18:36:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2025-03-16 18:36:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:54,735 INFO L225 Difference]: With dead ends: 2418 [2025-03-16 18:36:54,735 INFO L226 Difference]: Without dead ends: 1449 [2025-03-16 18:36:54,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 18:36:54,740 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 834 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:54,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1699 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2025-03-16 18:36:54,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1401. [2025-03-16 18:36:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1083 states have (on average 1.6694367497691598) internal successors, (1808), 1135 states have internal predecessors, (1808), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2025-03-16 18:36:54,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2325 transitions. [2025-03-16 18:36:54,791 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2325 transitions. Word has length 68 [2025-03-16 18:36:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:54,792 INFO L471 AbstractCegarLoop]: Abstraction has 1401 states and 2325 transitions. [2025-03-16 18:36:54,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-03-16 18:36:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2325 transitions. [2025-03-16 18:36:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-16 18:36:54,793 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:54,793 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:54,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:54,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-16 18:36:54,998 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:54,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:54,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1864785351, now seen corresponding path program 1 times [2025-03-16 18:36:54,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:54,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895738663] [2025-03-16 18:36:54,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:54,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:55,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-16 18:36:55,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-16 18:36:55,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:55,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:55,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895738663] [2025-03-16 18:36:55,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895738663] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:55,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:55,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247696464] [2025-03-16 18:36:55,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:55,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:55,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:55,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:55,126 INFO L87 Difference]: Start difference. First operand 1401 states and 2325 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:55,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:55,586 INFO L93 Difference]: Finished difference Result 4147 states and 7026 transitions. [2025-03-16 18:36:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:55,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-03-16 18:36:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:55,605 INFO L225 Difference]: With dead ends: 4147 [2025-03-16 18:36:55,605 INFO L226 Difference]: Without dead ends: 2760 [2025-03-16 18:36:55,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:55,613 INFO L435 NwaCegarLoop]: 1003 mSDtfsCounter, 863 mSDsluCounter, 3600 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 4603 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:55,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 4603 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:36:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2025-03-16 18:36:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2713. [2025-03-16 18:36:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2103 states have (on average 1.6723728007608178) internal successors, (3517), 2203 states have internal predecessors, (3517), 489 states have call successors, (489), 118 states have call predecessors, (489), 120 states have return successors, (595), 475 states have call predecessors, (595), 485 states have call successors, (595) [2025-03-16 18:36:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 4601 transitions. [2025-03-16 18:36:55,760 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 4601 transitions. Word has length 70 [2025-03-16 18:36:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:55,760 INFO L471 AbstractCegarLoop]: Abstraction has 2713 states and 4601 transitions. [2025-03-16 18:36:55,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-16 18:36:55,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 4601 transitions. [2025-03-16 18:36:55,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 18:36:55,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:55,762 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:55,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 18:36:55,762 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:55,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1631423597, now seen corresponding path program 1 times [2025-03-16 18:36:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:55,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26081819] [2025-03-16 18:36:55,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:55,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:55,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:36:55,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:36:55,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:55,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-16 18:36:55,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26081819] [2025-03-16 18:36:55,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26081819] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:36:55,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580156809] [2025-03-16 18:36:55,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:55,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:36:55,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:36:55,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 18:36:56,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:36:56,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:36:56,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:56,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:56,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:36:56,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:36:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 18:36:56,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:36:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580156809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:56,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:36:56,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2025-03-16 18:36:56,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300575041] [2025-03-16 18:36:56,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:56,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 18:36:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:56,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 18:36:56,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2025-03-16 18:36:56,283 INFO L87 Difference]: Start difference. First operand 2713 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:36:56,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:56,660 INFO L93 Difference]: Finished difference Result 7322 states and 12614 transitions. [2025-03-16 18:36:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 18:36:56,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 71 [2025-03-16 18:36:56,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:56,692 INFO L225 Difference]: With dead ends: 7322 [2025-03-16 18:36:56,692 INFO L226 Difference]: Without dead ends: 4623 [2025-03-16 18:36:56,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-03-16 18:36:56,711 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 739 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:56,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 3269 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 18:36:56,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2025-03-16 18:36:56,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4580. [2025-03-16 18:36:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 3548 states have (on average 1.625140924464487) internal successors, (5766), 3714 states have internal predecessors, (5766), 814 states have call successors, (814), 210 states have call predecessors, (814), 217 states have return successors, (1100), 795 states have call predecessors, (1100), 808 states have call successors, (1100) [2025-03-16 18:36:56,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 7680 transitions. [2025-03-16 18:36:56,932 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 7680 transitions. Word has length 71 [2025-03-16 18:36:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:56,932 INFO L471 AbstractCegarLoop]: Abstraction has 4580 states and 7680 transitions. [2025-03-16 18:36:56,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2025-03-16 18:36:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 7680 transitions. [2025-03-16 18:36:56,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-16 18:36:56,933 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:56,933 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:56,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 18:36:57,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:36:57,137 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1680021780, now seen corresponding path program 1 times [2025-03-16 18:36:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477493774] [2025-03-16 18:36:57,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-16 18:36:57,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-16 18:36:57,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-16 18:36:57,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:57,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477493774] [2025-03-16 18:36:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477493774] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:57,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211499436] [2025-03-16 18:36:57,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:57,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:57,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:57,214 INFO L87 Difference]: Start difference. First operand 4580 states and 7680 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:57,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:57,398 INFO L93 Difference]: Finished difference Result 9170 states and 15529 transitions. [2025-03-16 18:36:57,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:57,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2025-03-16 18:36:57,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:57,432 INFO L225 Difference]: With dead ends: 9170 [2025-03-16 18:36:57,433 INFO L226 Difference]: Without dead ends: 4604 [2025-03-16 18:36:57,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:57,455 INFO L435 NwaCegarLoop]: 852 mSDtfsCounter, 12 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:57,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2531 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:57,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2025-03-16 18:36:57,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4588. [2025-03-16 18:36:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 3554 states have (on average 1.6235227912211592) internal successors, (5770), 3720 states have internal predecessors, (5770), 814 states have call successors, (814), 214 states have call predecessors, (814), 219 states have return successors, (1087), 793 states have call predecessors, (1087), 808 states have call successors, (1087) [2025-03-16 18:36:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7671 transitions. [2025-03-16 18:36:57,654 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7671 transitions. Word has length 71 [2025-03-16 18:36:57,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:57,655 INFO L471 AbstractCegarLoop]: Abstraction has 4588 states and 7671 transitions. [2025-03-16 18:36:57,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-16 18:36:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7671 transitions. [2025-03-16 18:36:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-16 18:36:57,657 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:57,658 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:57,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 18:36:57,658 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:57,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:57,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1123960594, now seen corresponding path program 1 times [2025-03-16 18:36:57,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:57,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558698566] [2025-03-16 18:36:57,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:57,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:57,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-16 18:36:57,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-16 18:36:57,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:57,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-16 18:36:57,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:57,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558698566] [2025-03-16 18:36:57,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558698566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:57,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:57,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702422043] [2025-03-16 18:36:57,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:57,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:57,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:57,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:57,770 INFO L87 Difference]: Start difference. First operand 4588 states and 7671 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:36:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:58,511 INFO L93 Difference]: Finished difference Result 13723 states and 23779 transitions. [2025-03-16 18:36:58,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:36:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 79 [2025-03-16 18:36:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:58,601 INFO L225 Difference]: With dead ends: 13723 [2025-03-16 18:36:58,601 INFO L226 Difference]: Without dead ends: 9149 [2025-03-16 18:36:58,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:36:58,635 INFO L435 NwaCegarLoop]: 939 mSDtfsCounter, 860 mSDsluCounter, 3417 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:58,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 4356 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:36:58,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2025-03-16 18:36:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 9080. [2025-03-16 18:36:58,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9080 states, 7042 states have (on average 1.620988355580801) internal successors, (11415), 7368 states have internal predecessors, (11415), 1600 states have call successors, (1600), 422 states have call predecessors, (1600), 437 states have return successors, (2611), 1569 states have call predecessors, (2611), 1590 states have call successors, (2611) [2025-03-16 18:36:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 15626 transitions. [2025-03-16 18:36:58,995 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 15626 transitions. Word has length 79 [2025-03-16 18:36:58,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:58,996 INFO L471 AbstractCegarLoop]: Abstraction has 9080 states and 15626 transitions. [2025-03-16 18:36:58,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-16 18:36:58,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 15626 transitions. [2025-03-16 18:36:58,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-16 18:36:58,997 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:58,997 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:58,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 18:36:58,998 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:58,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash 992049506, now seen corresponding path program 1 times [2025-03-16 18:36:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:58,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447688068] [2025-03-16 18:36:58,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:58,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:59,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-16 18:36:59,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-16 18:36:59,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:59,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 18:36:59,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447688068] [2025-03-16 18:36:59,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447688068] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:59,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:59,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:36:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670775738] [2025-03-16 18:36:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:59,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:36:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:59,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:36:59,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:36:59,069 INFO L87 Difference]: Start difference. First operand 9080 states and 15626 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:36:59,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:36:59,419 INFO L93 Difference]: Finished difference Result 18218 states and 31809 transitions. [2025-03-16 18:36:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:36:59,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2025-03-16 18:36:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:36:59,473 INFO L225 Difference]: With dead ends: 18218 [2025-03-16 18:36:59,473 INFO L226 Difference]: Without dead ends: 9152 [2025-03-16 18:36:59,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:36:59,510 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 12 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:36:59,510 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:36:59,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9152 states. [2025-03-16 18:36:59,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9152 to 9120. [2025-03-16 18:36:59,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9120 states, 7078 states have (on average 1.6183950268437413) internal successors, (11455), 7396 states have internal predecessors, (11455), 1600 states have call successors, (1600), 438 states have call predecessors, (1600), 441 states have return successors, (2591), 1565 states have call predecessors, (2591), 1590 states have call successors, (2591) [2025-03-16 18:36:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9120 states to 9120 states and 15646 transitions. [2025-03-16 18:36:59,864 INFO L78 Accepts]: Start accepts. Automaton has 9120 states and 15646 transitions. Word has length 80 [2025-03-16 18:36:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:36:59,864 INFO L471 AbstractCegarLoop]: Abstraction has 9120 states and 15646 transitions. [2025-03-16 18:36:59,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-16 18:36:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9120 states and 15646 transitions. [2025-03-16 18:36:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-16 18:36:59,866 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:36:59,866 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:36:59,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 18:36:59,867 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:36:59,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:36:59,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1350902687, now seen corresponding path program 1 times [2025-03-16 18:36:59,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:36:59,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519469303] [2025-03-16 18:36:59,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:36:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:36:59,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 18:36:59,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 18:36:59,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:36:59,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:36:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-16 18:36:59,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:36:59,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519469303] [2025-03-16 18:36:59,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519469303] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:36:59,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:36:59,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:36:59,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602157486] [2025-03-16 18:36:59,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:36:59,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:36:59,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:36:59,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:36:59,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:36:59,967 INFO L87 Difference]: Start difference. First operand 9120 states and 15646 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:37:01,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:01,078 INFO L93 Difference]: Finished difference Result 27391 states and 49550 transitions. [2025-03-16 18:37:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:01,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2025-03-16 18:37:01,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:01,273 INFO L225 Difference]: With dead ends: 27391 [2025-03-16 18:37:01,273 INFO L226 Difference]: Without dead ends: 18285 [2025-03-16 18:37:01,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:01,356 INFO L435 NwaCegarLoop]: 938 mSDtfsCounter, 856 mSDsluCounter, 3423 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 4361 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:01,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 4361 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-16 18:37:01,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18285 states. [2025-03-16 18:37:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18285 to 18184. [2025-03-16 18:37:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18184 states, 14120 states have (on average 1.6153682719546743) internal successors, (22809), 14750 states have internal predecessors, (22809), 3178 states have call successors, (3178), 870 states have call predecessors, (3178), 885 states have return successors, (6613), 3123 states have call predecessors, (6613), 3160 states have call successors, (6613) [2025-03-16 18:37:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18184 states to 18184 states and 32600 transitions. [2025-03-16 18:37:02,224 INFO L78 Accepts]: Start accepts. Automaton has 18184 states and 32600 transitions. Word has length 89 [2025-03-16 18:37:02,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:02,225 INFO L471 AbstractCegarLoop]: Abstraction has 18184 states and 32600 transitions. [2025-03-16 18:37:02,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-16 18:37:02,225 INFO L276 IsEmpty]: Start isEmpty. Operand 18184 states and 32600 transitions. [2025-03-16 18:37:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 18:37:02,227 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:02,227 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:02,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-16 18:37:02,227 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:02,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1564084230, now seen corresponding path program 1 times [2025-03-16 18:37:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196043078] [2025-03-16 18:37:02,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:02,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 18:37:02,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 18:37:02,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:02,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-16 18:37:02,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:02,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196043078] [2025-03-16 18:37:02,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196043078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:02,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:02,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:02,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134670288] [2025-03-16 18:37:02,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:02,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:02,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:02,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:02,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:02,301 INFO L87 Difference]: Start difference. First operand 18184 states and 32600 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:37:03,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:03,106 INFO L93 Difference]: Finished difference Result 36498 states and 66999 transitions. [2025-03-16 18:37:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:37:03,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2025-03-16 18:37:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:03,229 INFO L225 Difference]: With dead ends: 36498 [2025-03-16 18:37:03,230 INFO L226 Difference]: Without dead ends: 18328 [2025-03-16 18:37:03,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:37:03,328 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 11 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:03,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2528 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:03,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18328 states. [2025-03-16 18:37:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18328 to 18264. [2025-03-16 18:37:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18264 states, 14192 states have (on average 1.6128100338218714) internal successors, (22889), 14822 states have internal predecessors, (22889), 3178 states have call successors, (3178), 886 states have call predecessors, (3178), 893 states have return successors, (6585), 3115 states have call predecessors, (6585), 3160 states have call successors, (6585) [2025-03-16 18:37:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18264 states to 18264 states and 32652 transitions. [2025-03-16 18:37:04,060 INFO L78 Accepts]: Start accepts. Automaton has 18264 states and 32652 transitions. Word has length 90 [2025-03-16 18:37:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:04,060 INFO L471 AbstractCegarLoop]: Abstraction has 18264 states and 32652 transitions. [2025-03-16 18:37:04,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-16 18:37:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 18264 states and 32652 transitions. [2025-03-16 18:37:04,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-16 18:37:04,063 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:04,064 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:04,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-16 18:37:04,064 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:04,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:04,065 INFO L85 PathProgramCache]: Analyzing trace with hash 900738119, now seen corresponding path program 1 times [2025-03-16 18:37:04,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:04,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391835119] [2025-03-16 18:37:04,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:04,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:04,080 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-16 18:37:04,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-16 18:37:04,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:04,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-16 18:37:04,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391835119] [2025-03-16 18:37:04,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391835119] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 18:37:04,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951138806] [2025-03-16 18:37:04,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:04,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:04,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 18:37:04,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 18:37:04,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 18:37:04,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-16 18:37:04,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-16 18:37:04,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:04,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:04,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-16 18:37:04,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 18:37:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-16 18:37:04,718 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 18:37:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951138806] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:04,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 18:37:04,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-03-16 18:37:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88424094] [2025-03-16 18:37:04,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:04,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 18:37:04,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:04,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 18:37:04,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2025-03-16 18:37:04,722 INFO L87 Difference]: Start difference. First operand 18264 states and 32652 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:37:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:09,911 INFO L93 Difference]: Finished difference Result 65257 states and 124560 transitions. [2025-03-16 18:37:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 18:37:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 124 [2025-03-16 18:37:09,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:10,444 INFO L225 Difference]: With dead ends: 65257 [2025-03-16 18:37:10,444 INFO L226 Difference]: Without dead ends: 47007 [2025-03-16 18:37:10,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2025-03-16 18:37:10,681 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 3003 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 6406 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 7042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 6406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:10,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3170 Valid, 2397 Invalid, 7042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 6406 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-16 18:37:10,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47007 states. [2025-03-16 18:37:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47007 to 46370. [2025-03-16 18:37:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46370 states, 36064 states have (on average 1.6064496450754215) internal successors, (57935), 37590 states have internal predecessors, (57935), 7956 states have call successors, (7956), 2206 states have call predecessors, (7956), 2349 states have return successors, (20721), 7941 states have call predecessors, (20721), 7922 states have call successors, (20721) [2025-03-16 18:37:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46370 states to 46370 states and 86612 transitions. [2025-03-16 18:37:12,949 INFO L78 Accepts]: Start accepts. Automaton has 46370 states and 86612 transitions. Word has length 124 [2025-03-16 18:37:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:12,949 INFO L471 AbstractCegarLoop]: Abstraction has 46370 states and 86612 transitions. [2025-03-16 18:37:12,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-16 18:37:12,950 INFO L276 IsEmpty]: Start isEmpty. Operand 46370 states and 86612 transitions. [2025-03-16 18:37:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-16 18:37:12,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:12,951 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:12,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 18:37:13,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 18:37:13,155 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:13,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1341453225, now seen corresponding path program 1 times [2025-03-16 18:37:13,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:13,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525458201] [2025-03-16 18:37:13,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:13,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-16 18:37:13,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-16 18:37:13,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:13,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-16 18:37:13,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:13,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525458201] [2025-03-16 18:37:13,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525458201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:13,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:13,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-16 18:37:13,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036230856] [2025-03-16 18:37:13,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:13,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-16 18:37:13,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:13,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-16 18:37:13,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-16 18:37:13,271 INFO L87 Difference]: Start difference. First operand 46370 states and 86612 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:37:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:18,528 INFO L93 Difference]: Finished difference Result 139547 states and 290308 transitions. [2025-03-16 18:37:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 18:37:18,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2025-03-16 18:37:18,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:19,575 INFO L225 Difference]: With dead ends: 139547 [2025-03-16 18:37:19,576 INFO L226 Difference]: Without dead ends: 93191 [2025-03-16 18:37:20,221 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-16 18:37:20,221 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 852 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:20,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 4339 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 18:37:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93191 states. [2025-03-16 18:37:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93191 to 92834. [2025-03-16 18:37:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92834 states, 72212 states have (on average 1.6035977399878136) internal successors, (115799), 75250 states have internal predecessors, (115799), 15880 states have call successors, (15880), 4406 states have call predecessors, (15880), 4741 states have return successors, (58181), 15913 states have call predecessors, (58181), 15814 states have call successors, (58181) [2025-03-16 18:37:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92834 states to 92834 states and 189860 transitions. [2025-03-16 18:37:25,983 INFO L78 Accepts]: Start accepts. Automaton has 92834 states and 189860 transitions. Word has length 100 [2025-03-16 18:37:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 18:37:25,984 INFO L471 AbstractCegarLoop]: Abstraction has 92834 states and 189860 transitions. [2025-03-16 18:37:25,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-16 18:37:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 92834 states and 189860 transitions. [2025-03-16 18:37:25,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-16 18:37:25,986 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 18:37:25,986 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 18:37:25,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-16 18:37:25,986 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 18:37:25,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 18:37:25,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1444754361, now seen corresponding path program 1 times [2025-03-16 18:37:25,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 18:37:25,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906381525] [2025-03-16 18:37:25,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 18:37:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 18:37:25,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-16 18:37:26,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-16 18:37:26,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 18:37:26,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 18:37:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-16 18:37:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 18:37:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906381525] [2025-03-16 18:37:26,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906381525] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 18:37:26,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 18:37:26,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 18:37:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366676980] [2025-03-16 18:37:26,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 18:37:26,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 18:37:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 18:37:26,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 18:37:26,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 18:37:26,065 INFO L87 Difference]: Start difference. First operand 92834 states and 189860 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-16 18:37:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 18:37:32,168 INFO L93 Difference]: Finished difference Result 186550 states and 401928 transitions. [2025-03-16 18:37:32,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 18:37:32,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2025-03-16 18:37:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 18:37:33,356 INFO L225 Difference]: With dead ends: 186550 [2025-03-16 18:37:33,356 INFO L226 Difference]: Without dead ends: 93730 [2025-03-16 18:37:34,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 18:37:34,176 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 10 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 18:37:34,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2525 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 18:37:34,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93730 states. [2025-03-16 18:37:37,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93730 to 93410. [2025-03-16 18:37:37,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93410 states, 72740 states have (on average 1.5998762716524608) internal successors, (116375), 75778 states have internal predecessors, (116375), 15880 states have call successors, (15880), 4502 states have call predecessors, (15880), 4789 states have return successors, (58117), 15865 states have call predecessors, (58117), 15814 states have call successors, (58117)