./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product20.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 b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:17:41,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:17:41,795 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:17:41,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:17:41,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:17:41,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:17:41,825 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:17:41,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:17:41,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:17:41,826 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:17:41,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:17:41,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:17:41,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:17:41,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:17:41,827 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:17:41,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:17:41,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:17:41,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:17:41,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:17:41,828 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:17:41,829 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:17:41,829 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:17:41,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:17:41,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:17:41,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:17:41,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:17:41,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:17:41,830 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 -> b7f63e91390dfc262975e205f156f8c4cc9b5ede7dbe2a20685844995f7cce81 [2025-03-03 14:17:42,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:17:42,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:17:42,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:17:42,049 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:17:42,049 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:17:42,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2025-03-03 14:17:43,183 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f225bc8a8/69d5db1e416c413c9b9a4dcfe5bcf423/FLAG0bf54b6ec [2025-03-03 14:17:43,555 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:17:43,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product20.cil.c [2025-03-03 14:17:43,579 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f225bc8a8/69d5db1e416c413c9b9a4dcfe5bcf423/FLAG0bf54b6ec [2025-03-03 14:17:43,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f225bc8a8/69d5db1e416c413c9b9a4dcfe5bcf423 [2025-03-03 14:17:43,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:17:43,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:17:43,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:17:43,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:17:43,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:17:43,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:17:43" (1/1) ... [2025-03-03 14:17:43,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18116f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:43, skipping insertion in model container [2025-03-03 14:17:43,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:17:43" (1/1) ... [2025-03-03 14:17:43,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:17:44,000 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_product20.cil.c[62576,62589] [2025-03-03 14:17:44,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:17:44,043 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:17:44,049 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [48] [2025-03-03 14:17:44,050 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [151] [2025-03-03 14:17:44,050 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [818] [2025-03-03 14:17:44,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2396] [2025-03-03 14:17:44,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2762] [2025-03-03 14:17:44,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2780] [2025-03-03 14:17:44,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2818] [2025-03-03 14:17:44,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2827] [2025-03-03 14:17:44,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3175] [2025-03-03 14:17:44,051 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3293] [2025-03-03 14:17:44,148 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_product20.cil.c[62576,62589] [2025-03-03 14:17:44,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:17:44,189 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:17:44,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44 WrapperNode [2025-03-03 14:17:44,190 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:17:44,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:17:44,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:17:44,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:17:44,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,246 INFO L138 Inliner]: procedures = 94, calls = 352, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 1108 [2025-03-03 14:17:44,247 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:17:44,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:17:44,247 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:17:44,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:17:44,254 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,259 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,293 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:17:44,294 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,294 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,320 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,324 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:17:44,331 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:17:44,331 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:17:44,331 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:17:44,331 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (1/1) ... [2025-03-03 14:17:44,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:17:44,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:44,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:17:44,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:17:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:17:44,376 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2025-03-03 14:17:44,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:17:44,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:17:44,377 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:17:44,378 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:17:44,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:17:44,379 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:17:44,379 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:17:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:17:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:17:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:17:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:17:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:17:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:17:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:17:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:17:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-03 14:17:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-03 14:17:44,505 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:17:44,510 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:17:44,538 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1102: #res := ~retValue_acc~7; [2025-03-03 14:17:44,559 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3212: #res := ~retValue_acc~27; [2025-03-03 14:17:44,576 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1706: #res := ~retValue_acc~14; [2025-03-03 14:17:44,604 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2384: #res := ~retValue_acc~18; [2025-03-03 14:17:44,803 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1616: #res#1 := ~retValue_acc~12#1; [2025-03-03 14:17:44,804 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1587-1: stopRequestedInDirection__wrappee__weight_#res#1 := stopRequestedInDirection__wrappee__weight_~retValue_acc~11#1; [2025-03-03 14:17:44,813 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1751: #res := ~retValue_acc~16; [2025-03-03 14:17:44,873 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1222-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~9#1; [2025-03-03 14:17:44,873 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1235-1: isIdle_#res#1 := isIdle_~retValue_acc~10#1; [2025-03-03 14:17:44,930 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1059-1: areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~5#1; [2025-03-03 14:17:44,934 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L815: #res := ~retValue_acc~2; [2025-03-03 14:17:44,944 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3290: #res := ~retValue_acc~29; [2025-03-03 14:17:44,946 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L897: #res := ~retValue_acc~3; [2025-03-03 14:17:44,947 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1050: #res := ~retValue_acc~4; [2025-03-03 14:17:45,084 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3251: #res := ~retValue_acc~28; [2025-03-03 14:17:45,098 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1093: #res := ~retValue_acc~6; [2025-03-03 14:17:45,168 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L504: #res := ~retValue_acc~1; [2025-03-03 14:17:45,226 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3172-1: main_#res#1 := main_~retValue_acc~26#1; [2025-03-03 14:17:45,226 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2815-1: valid_product_#res#1 := valid_product_~retValue_acc~24#1; [2025-03-03 14:17:45,234 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L268: #res := ~retValue_acc~0; [2025-03-03 14:17:45,336 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1737-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~15#1; [2025-03-03 14:17:45,437 INFO L? ?]: Removed 461 outVars from TransFormulas that were not future-live. [2025-03-03 14:17:45,437 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:17:45,456 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:17:45,456 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:17:45,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:17:45 BoogieIcfgContainer [2025-03-03 14:17:45,457 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:17:45,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:17:45,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:17:45,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:17:45,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:17:43" (1/3) ... [2025-03-03 14:17:45,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fdeeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:17:45, skipping insertion in model container [2025-03-03 14:17:45,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:17:44" (2/3) ... [2025-03-03 14:17:45,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13fdeeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:17:45, skipping insertion in model container [2025-03-03 14:17:45,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:17:45" (3/3) ... [2025-03-03 14:17:45,463 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product20.cil.c [2025-03-03 14:17:45,476 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:17:45,479 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product20.cil.c that has 29 procedures, 596 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:17:45,532 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:17:45,539 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;@4acdc12e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:17:45,539 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:17:45,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 476 states have internal predecessors, (759), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2025-03-03 14:17:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 14:17:45,559 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:45,560 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] [2025-03-03 14:17:45,561 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:45,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash 797481116, now seen corresponding path program 1 times [2025-03-03 14:17:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:45,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138638136] [2025-03-03 14:17:45,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:45,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:45,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 14:17:45,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 14:17:45,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:45,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:46,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138638136] [2025-03-03 14:17:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138638136] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:46,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471352870] [2025-03-03 14:17:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:46,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:46,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:46,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:46,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:46,122 INFO L87 Difference]: Start difference. First operand has 596 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 476 states have internal predecessors, (759), 110 states have call successors, (110), 28 states have call predecessors, (110), 28 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:46,321 INFO L93 Difference]: Finished difference Result 1189 states and 1970 transitions. [2025-03-03 14:17:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:46,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2025-03-03 14:17:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:46,340 INFO L225 Difference]: With dead ends: 1189 [2025-03-03 14:17:46,341 INFO L226 Difference]: Without dead ends: 601 [2025-03-03 14:17:46,346 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 [2025-03-03 14:17:46,348 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 91 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5704 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 [2025-03-03 14:17:46,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5704 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:17:46,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2025-03-03 14:17:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2025-03-03 14:17:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 459 states have (on average 1.6579520697167756) internal successors, (761), 479 states have internal predecessors, (761), 111 states have call successors, (111), 28 states have call predecessors, (111), 28 states have return successors, (110), 105 states have call predecessors, (110), 108 states have call successors, (110) [2025-03-03 14:17:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 982 transitions. [2025-03-03 14:17:46,428 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 982 transitions. Word has length 67 [2025-03-03 14:17:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:46,430 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 982 transitions. [2025-03-03 14:17:46,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 982 transitions. [2025-03-03 14:17:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 14:17:46,436 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:46,436 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] [2025-03-03 14:17:46,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:17:46,437 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:46,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash -110496214, now seen corresponding path program 1 times [2025-03-03 14:17:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:46,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108820675] [2025-03-03 14:17:46,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:46,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:46,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 14:17:46,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 14:17:46,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:46,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:46,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108820675] [2025-03-03 14:17:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108820675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:46,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:46,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:46,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485369684] [2025-03-03 14:17:46,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:46,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:46,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:46,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:46,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:46,582 INFO L87 Difference]: Start difference. First operand 599 states and 982 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:17:46,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:46,660 INFO L93 Difference]: Finished difference Result 1180 states and 1945 transitions. [2025-03-03 14:17:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:46,662 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2025-03-03 14:17:46,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:46,668 INFO L225 Difference]: With dead ends: 1180 [2025-03-03 14:17:46,668 INFO L226 Difference]: Without dead ends: 575 [2025-03-03 14:17:46,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:46,672 INFO L435 NwaCegarLoop]: 952 mSDtfsCounter, 14 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2851 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 [2025-03-03 14:17:46,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2851 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2025-03-03 14:17:46,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2025-03-03 14:17:46,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 438 states have (on average 1.6484018264840183) internal successors, (722), 456 states have internal predecessors, (722), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 939 transitions. [2025-03-03 14:17:46,703 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 939 transitions. Word has length 68 [2025-03-03 14:17:46,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:46,703 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 939 transitions. [2025-03-03 14:17:46,703 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 14:17:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 939 transitions. [2025-03-03 14:17:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 14:17:46,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:46,707 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] [2025-03-03 14:17:46,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 14:17:46,707 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:46,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1646399251, now seen corresponding path program 1 times [2025-03-03 14:17:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357551434] [2025-03-03 14:17:46,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:46,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 14:17:46,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 14:17:46,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:46,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:46,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:46,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357551434] [2025-03-03 14:17:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357551434] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:46,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:46,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876170587] [2025-03-03 14:17:46,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:46,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:46,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:46,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:46,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:46,962 INFO L87 Difference]: Start difference. First operand 575 states and 939 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:47,052 INFO L93 Difference]: Finished difference Result 1143 states and 1877 transitions. [2025-03-03 14:17:47,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:47,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2025-03-03 14:17:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:47,058 INFO L225 Difference]: With dead ends: 1143 [2025-03-03 14:17:47,058 INFO L226 Difference]: Without dead ends: 569 [2025-03-03 14:17:47,061 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 [2025-03-03 14:17:47,062 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 77 mSDsluCounter, 4570 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 5498 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 [2025-03-03 14:17:47,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 5498 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-03 14:17:47,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2025-03-03 14:17:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 432 states have (on average 1.6412037037037037) internal successors, (709), 450 states have internal predecessors, (709), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:47,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 926 transitions. [2025-03-03 14:17:47,095 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 926 transitions. Word has length 68 [2025-03-03 14:17:47,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:47,097 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 926 transitions. [2025-03-03 14:17:47,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 926 transitions. [2025-03-03 14:17:47,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-03 14:17:47,100 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:47,100 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] [2025-03-03 14:17:47,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 14:17:47,101 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:47,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1297054762, now seen corresponding path program 1 times [2025-03-03 14:17:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:47,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873017541] [2025-03-03 14:17:47,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:47,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-03 14:17:47,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-03 14:17:47,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:47,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:47,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:47,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:47,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873017541] [2025-03-03 14:17:47,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873017541] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:47,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:47,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:47,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098416014] [2025-03-03 14:17:47,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:47,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:47,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:47,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:47,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:47,317 INFO L87 Difference]: Start difference. First operand 569 states and 926 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:47,389 INFO L93 Difference]: Finished difference Result 1131 states and 1851 transitions. [2025-03-03 14:17:47,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:47,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2025-03-03 14:17:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:47,394 INFO L225 Difference]: With dead ends: 1131 [2025-03-03 14:17:47,395 INFO L226 Difference]: Without dead ends: 563 [2025-03-03 14:17:47,397 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 [2025-03-03 14:17:47,398 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 63 mSDsluCounter, 4522 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5438 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 [2025-03-03 14:17:47,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5438 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:47,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2025-03-03 14:17:47,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2025-03-03 14:17:47,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 426 states have (on average 1.6338028169014085) internal successors, (696), 444 states have internal predecessors, (696), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 913 transitions. [2025-03-03 14:17:47,418 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 913 transitions. Word has length 69 [2025-03-03 14:17:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:47,418 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 913 transitions. [2025-03-03 14:17:47,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 913 transitions. [2025-03-03 14:17:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:17:47,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:47,419 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] [2025-03-03 14:17:47,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 14:17:47,420 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:47,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1544961075, now seen corresponding path program 1 times [2025-03-03 14:17:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:47,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852404487] [2025-03-03 14:17:47,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:47,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:17:47,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:17:47,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:47,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:47,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852404487] [2025-03-03 14:17:47,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852404487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:47,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:47,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703874084] [2025-03-03 14:17:47,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:47,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:47,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:47,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:47,561 INFO L87 Difference]: Start difference. First operand 563 states and 913 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:47,619 INFO L93 Difference]: Finished difference Result 1119 states and 1825 transitions. [2025-03-03 14:17:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-03-03 14:17:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:47,625 INFO L225 Difference]: With dead ends: 1119 [2025-03-03 14:17:47,626 INFO L226 Difference]: Without dead ends: 557 [2025-03-03 14:17:47,628 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 [2025-03-03 14:17:47,629 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 49 mSDsluCounter, 4474 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5378 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 [2025-03-03 14:17:47,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5378 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-03 14:17:47,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-03 14:17:47,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6261904761904762) internal successors, (683), 438 states have internal predecessors, (683), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:47,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 900 transitions. [2025-03-03 14:17:47,653 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 900 transitions. Word has length 70 [2025-03-03 14:17:47,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:47,653 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 900 transitions. [2025-03-03 14:17:47,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,654 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 900 transitions. [2025-03-03 14:17:47,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 14:17:47,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:47,655 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] [2025-03-03 14:17:47,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 14:17:47,655 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:47,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:47,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1727212549, now seen corresponding path program 1 times [2025-03-03 14:17:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:47,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773506189] [2025-03-03 14:17:47,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:47,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 14:17:47,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 14:17:47,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:47,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:47,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:47,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773506189] [2025-03-03 14:17:47,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773506189] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:47,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:47,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:17:47,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957819693] [2025-03-03 14:17:47,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:47,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:17:47,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:47,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:17:47,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:47,811 INFO L87 Difference]: Start difference. First operand 557 states and 900 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:47,866 INFO L93 Difference]: Finished difference Result 1107 states and 1799 transitions. [2025-03-03 14:17:47,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:17:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2025-03-03 14:17:47,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:47,870 INFO L225 Difference]: With dead ends: 1107 [2025-03-03 14:17:47,870 INFO L226 Difference]: Without dead ends: 557 [2025-03-03 14:17:47,872 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 [2025-03-03 14:17:47,875 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 24 mSDsluCounter, 4438 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5330 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 [2025-03-03 14:17:47,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5330 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-03 14:17:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-03 14:17:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6238095238095238) internal successors, (682), 438 states have internal predecessors, (682), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 899 transitions. [2025-03-03 14:17:47,897 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 899 transitions. Word has length 70 [2025-03-03 14:17:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:47,898 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 899 transitions. [2025-03-03 14:17:47,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 899 transitions. [2025-03-03 14:17:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 14:17:47,901 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:47,901 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] [2025-03-03 14:17:47,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 14:17:47,903 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:47,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash 164732688, now seen corresponding path program 1 times [2025-03-03 14:17:47,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:47,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990069887] [2025-03-03 14:17:47,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:47,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:47,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 14:17:47,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 14:17:47,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:47,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:47,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:47,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:47,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990069887] [2025-03-03 14:17:47,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990069887] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:47,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:47,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:47,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096305635] [2025-03-03 14:17:47,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:47,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:47,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:47,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:47,982 INFO L87 Difference]: Start difference. First operand 557 states and 899 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) [2025-03-03 14:17:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:48,019 INFO L93 Difference]: Finished difference Result 1098 states and 1784 transitions. [2025-03-03 14:17:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:48,020 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 [2025-03-03 14:17:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:48,024 INFO L225 Difference]: With dead ends: 1098 [2025-03-03 14:17:48,024 INFO L226 Difference]: Without dead ends: 557 [2025-03-03 14:17:48,026 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 [2025-03-03 14:17:48,027 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 15 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2637 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 [2025-03-03 14:17:48,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2637 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-03 14:17:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-03 14:17:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6214285714285714) internal successors, (681), 438 states have internal predecessors, (681), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 898 transitions. [2025-03-03 14:17:48,046 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 898 transitions. Word has length 71 [2025-03-03 14:17:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:48,046 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 898 transitions. [2025-03-03 14:17:48,047 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) [2025-03-03 14:17:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 898 transitions. [2025-03-03 14:17:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-03 14:17:48,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:48,049 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:48,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 14:17:48,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:48,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1365347765, now seen corresponding path program 1 times [2025-03-03 14:17:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678461241] [2025-03-03 14:17:48,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:48,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-03 14:17:48,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 14:17:48,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:48,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:48,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:48,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678461241] [2025-03-03 14:17:48,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678461241] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:48,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:48,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:48,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999105949] [2025-03-03 14:17:48,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:48,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:48,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:48,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:48,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:48,129 INFO L87 Difference]: Start difference. First operand 557 states and 898 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-03 14:17:48,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:48,171 INFO L93 Difference]: Finished difference Result 1098 states and 1782 transitions. [2025-03-03 14:17:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:48,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 72 [2025-03-03 14:17:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:48,177 INFO L225 Difference]: With dead ends: 1098 [2025-03-03 14:17:48,178 INFO L226 Difference]: Without dead ends: 557 [2025-03-03 14:17:48,180 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 [2025-03-03 14:17:48,181 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 14 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2639 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 [2025-03-03 14:17:48,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2639 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-03 14:17:48,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-03 14:17:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.619047619047619) internal successors, (680), 438 states have internal predecessors, (680), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 897 transitions. [2025-03-03 14:17:48,201 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 897 transitions. Word has length 72 [2025-03-03 14:17:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:48,202 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 897 transitions. [2025-03-03 14:17:48,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2025-03-03 14:17:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 897 transitions. [2025-03-03 14:17:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-03-03 14:17:48,203 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:48,203 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:48,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 14:17:48,203 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:48,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:48,204 INFO L85 PathProgramCache]: Analyzing trace with hash 378833203, now seen corresponding path program 1 times [2025-03-03 14:17:48,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:48,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514747329] [2025-03-03 14:17:48,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:48,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:48,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-03-03 14:17:48,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-03-03 14:17:48,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:48,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514747329] [2025-03-03 14:17:48,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514747329] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:48,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:48,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065586736] [2025-03-03 14:17:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:48,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:48,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:48,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:48,303 INFO L87 Difference]: Start difference. First operand 557 states and 897 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (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) [2025-03-03 14:17:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:48,341 INFO L93 Difference]: Finished difference Result 1098 states and 1780 transitions. [2025-03-03 14:17:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (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 73 [2025-03-03 14:17:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:48,345 INFO L225 Difference]: With dead ends: 1098 [2025-03-03 14:17:48,346 INFO L226 Difference]: Without dead ends: 557 [2025-03-03 14:17:48,348 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 [2025-03-03 14:17:48,349 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 13 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2641 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 [2025-03-03 14:17:48,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2641 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-03 14:17:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-03 14:17:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6166666666666667) internal successors, (679), 438 states have internal predecessors, (679), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 896 transitions. [2025-03-03 14:17:48,366 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 896 transitions. Word has length 73 [2025-03-03 14:17:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:48,366 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 896 transitions. [2025-03-03 14:17:48,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (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) [2025-03-03 14:17:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 896 transitions. [2025-03-03 14:17:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-03 14:17:48,369 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:48,369 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:48,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 14:17:48,369 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:48,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash 310776568, now seen corresponding path program 1 times [2025-03-03 14:17:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771518549] [2025-03-03 14:17:48,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:48,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-03 14:17:48,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 14:17:48,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:48,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:48,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:48,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771518549] [2025-03-03 14:17:48,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771518549] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:48,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:48,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:48,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694395036] [2025-03-03 14:17:48,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:48,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:48,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:48,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:48,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:48,441 INFO L87 Difference]: Start difference. First operand 557 states and 896 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-03 14:17:48,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:48,495 INFO L93 Difference]: Finished difference Result 1098 states and 1778 transitions. [2025-03-03 14:17:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:17:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 74 [2025-03-03 14:17:48,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:48,502 INFO L225 Difference]: With dead ends: 1098 [2025-03-03 14:17:48,502 INFO L226 Difference]: Without dead ends: 557 [2025-03-03 14:17:48,507 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 [2025-03-03 14:17:48,508 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 12 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2643 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 [2025-03-03 14:17:48,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2643 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-03 14:17:48,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-03 14:17:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 420 states have (on average 1.6142857142857143) internal successors, (678), 438 states have internal predecessors, (678), 110 states have call successors, (110), 28 states have call predecessors, (110), 26 states have return successors, (107), 104 states have call predecessors, (107), 107 states have call successors, (107) [2025-03-03 14:17:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 895 transitions. [2025-03-03 14:17:48,537 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 895 transitions. Word has length 74 [2025-03-03 14:17:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:48,538 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 895 transitions. [2025-03-03 14:17:48,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2025-03-03 14:17:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 895 transitions. [2025-03-03 14:17:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-03-03 14:17:48,539 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:48,539 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:48,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 14:17:48,539 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:48,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:48,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1349855402, now seen corresponding path program 1 times [2025-03-03 14:17:48,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:48,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741478612] [2025-03-03 14:17:48,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:48,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:48,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-03 14:17:48,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 14:17:48,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:48,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:48,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:48,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741478612] [2025-03-03 14:17:48,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741478612] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:48,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065597362] [2025-03-03 14:17:48,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:48,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:48,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:48,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:48,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:17:48,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-03-03 14:17:48,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-03-03 14:17:48,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:48,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:48,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 1495 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:17:48,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:48,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:48,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065597362] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:48,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:48,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 14:17:48,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081678717] [2025-03-03 14:17:48,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:48,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:17:48,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:48,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:17:48,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:48,990 INFO L87 Difference]: Start difference. First operand 557 states and 895 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:49,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:49,050 INFO L93 Difference]: Finished difference Result 1582 states and 2573 transitions. [2025-03-03 14:17:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:17:49,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2025-03-03 14:17:49,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:49,058 INFO L225 Difference]: With dead ends: 1582 [2025-03-03 14:17:49,059 INFO L226 Difference]: Without dead ends: 1043 [2025-03-03 14:17:49,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:49,062 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 858 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 2301 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 [2025-03-03 14:17:49,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 2301 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2025-03-03 14:17:49,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1028. [2025-03-03 14:17:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 782 states have (on average 1.6265984654731458) internal successors, (1272), 817 states have internal predecessors, (1272), 195 states have call successors, (195), 51 states have call predecessors, (195), 50 states have return successors, (197), 187 states have call predecessors, (197), 192 states have call successors, (197) [2025-03-03 14:17:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1664 transitions. [2025-03-03 14:17:49,103 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1664 transitions. Word has length 75 [2025-03-03 14:17:49,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:49,104 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1664 transitions. [2025-03-03 14:17:49,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:49,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1664 transitions. [2025-03-03 14:17:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-03 14:17:49,106 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:49,106 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:49,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:17:49,307 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 [2025-03-03 14:17:49,307 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:49,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash -367987387, now seen corresponding path program 1 times [2025-03-03 14:17:49,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:49,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494690032] [2025-03-03 14:17:49,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:49,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:49,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-03 14:17:49,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-03 14:17:49,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:49,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:49,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494690032] [2025-03-03 14:17:49,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494690032] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139408081] [2025-03-03 14:17:49,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:49,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:49,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:49,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:17:49,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-03 14:17:49,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-03 14:17:49,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:49,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:49,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 1496 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:17:49,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:49,764 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:49,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139408081] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:49,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:49,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 14:17:49,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157717028] [2025-03-03 14:17:49,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:49,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:17:49,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:49,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:17:49,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:49,765 INFO L87 Difference]: Start difference. First operand 1028 states and 1664 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:49,827 INFO L93 Difference]: Finished difference Result 2524 states and 4113 transitions. [2025-03-03 14:17:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:17:49,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2025-03-03 14:17:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:49,837 INFO L225 Difference]: With dead ends: 2524 [2025-03-03 14:17:49,837 INFO L226 Difference]: Without dead ends: 1514 [2025-03-03 14:17:49,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:17:49,842 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 857 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2358 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 [2025-03-03 14:17:49,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 2358 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2025-03-03 14:17:49,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1466. [2025-03-03 14:17:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1117 states have (on average 1.6383169203222918) internal successors, (1830), 1169 states have internal predecessors, (1830), 277 states have call successors, (277), 71 states have call predecessors, (277), 71 states have return successors, (284), 267 states have call predecessors, (284), 274 states have call successors, (284) [2025-03-03 14:17:49,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2391 transitions. [2025-03-03 14:17:49,892 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2391 transitions. Word has length 76 [2025-03-03 14:17:49,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:49,893 INFO L471 AbstractCegarLoop]: Abstraction has 1466 states and 2391 transitions. [2025-03-03 14:17:49,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 14:17:49,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2391 transitions. [2025-03-03 14:17:49,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-03 14:17:49,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:49,894 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:49,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 14:17:50,095 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 [2025-03-03 14:17:50,095 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:50,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1717549652, now seen corresponding path program 1 times [2025-03-03 14:17:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:50,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455730737] [2025-03-03 14:17:50,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:50,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:50,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-03 14:17:50,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-03 14:17:50,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:50,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455730737] [2025-03-03 14:17:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455730737] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:50,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:50,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:17:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147269818] [2025-03-03 14:17:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:50,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:50,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:50,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:50,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:17:50,225 INFO L87 Difference]: Start difference. First operand 1466 states and 2391 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) [2025-03-03 14:17:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:50,716 INFO L93 Difference]: Finished difference Result 4334 states and 7198 transitions. [2025-03-03 14:17:50,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:50,717 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 78 [2025-03-03 14:17:50,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:50,739 INFO L225 Difference]: With dead ends: 4334 [2025-03-03 14:17:50,739 INFO L226 Difference]: Without dead ends: 2886 [2025-03-03 14:17:50,748 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 [2025-03-03 14:17:50,749 INFO L435 NwaCegarLoop]: 1029 mSDtfsCounter, 883 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 4715 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:50,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 4715 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:17:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2025-03-03 14:17:50,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2839. [2025-03-03 14:17:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2167 states have (on average 1.641439778495616) internal successors, (3557), 2267 states have internal predecessors, (3557), 533 states have call successors, (533), 136 states have call predecessors, (533), 138 states have return successors, (621), 519 states have call predecessors, (621), 529 states have call successors, (621) [2025-03-03 14:17:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 4711 transitions. [2025-03-03 14:17:50,877 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 4711 transitions. Word has length 78 [2025-03-03 14:17:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:50,878 INFO L471 AbstractCegarLoop]: Abstraction has 2839 states and 4711 transitions. [2025-03-03 14:17:50,878 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) [2025-03-03 14:17:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 4711 transitions. [2025-03-03 14:17:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 14:17:50,880 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:50,880 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:50,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-03 14:17:50,880 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:50,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash -784968446, now seen corresponding path program 1 times [2025-03-03 14:17:50,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:50,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072908238] [2025-03-03 14:17:50,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:50,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:50,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:17:50,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:17:50,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:50,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:17:51,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072908238] [2025-03-03 14:17:51,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072908238] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:51,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080879605] [2025-03-03 14:17:51,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:51,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:51,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:51,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:17:51,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:17:51,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:17:51,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:51,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:51,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 1514 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:17:51,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:17:51,368 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080879605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:51,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:51,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-03-03 14:17:51,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838032927] [2025-03-03 14:17:51,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:51,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:51,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:51,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:51,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:17:51,371 INFO L87 Difference]: Start difference. First operand 2839 states and 4711 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-03 14:17:52,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:52,028 INFO L93 Difference]: Finished difference Result 7682 states and 12936 transitions. [2025-03-03 14:17:52,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:52,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2025-03-03 14:17:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:52,090 INFO L225 Difference]: With dead ends: 7682 [2025-03-03 14:17:52,091 INFO L226 Difference]: Without dead ends: 4861 [2025-03-03 14:17:52,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:17:52,104 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 753 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 4033 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:52,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 4033 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 14:17:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4861 states. [2025-03-03 14:17:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 4818. [2025-03-03 14:17:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4818 states, 3672 states have (on average 1.593681917211329) internal successors, (5852), 3838 states have internal predecessors, (5852), 894 states have call successors, (894), 244 states have call predecessors, (894), 251 states have return successors, (1150), 875 states have call predecessors, (1150), 888 states have call successors, (1150) [2025-03-03 14:17:52,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4818 states to 4818 states and 7896 transitions. [2025-03-03 14:17:52,295 INFO L78 Accepts]: Start accepts. Automaton has 4818 states and 7896 transitions. Word has length 79 [2025-03-03 14:17:52,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:52,296 INFO L471 AbstractCegarLoop]: Abstraction has 4818 states and 7896 transitions. [2025-03-03 14:17:52,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-03 14:17:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 4818 states and 7896 transitions. [2025-03-03 14:17:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-03 14:17:52,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:52,301 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:52,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 14:17:52,501 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 [2025-03-03 14:17:52,501 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:52,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:52,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1706999889, now seen corresponding path program 1 times [2025-03-03 14:17:52,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:52,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757080349] [2025-03-03 14:17:52,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:52,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:52,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-03 14:17:52,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-03 14:17:52,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:52,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:17:52,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:52,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757080349] [2025-03-03 14:17:52,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757080349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:52,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:52,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367148674] [2025-03-03 14:17:52,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:52,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:52,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:52,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:52,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:52,580 INFO L87 Difference]: Start difference. First operand 4818 states and 7896 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2025-03-03 14:17:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:52,814 INFO L93 Difference]: Finished difference Result 9642 states and 15957 transitions. [2025-03-03 14:17:52,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:52,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 79 [2025-03-03 14:17:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:52,843 INFO L225 Difference]: With dead ends: 9642 [2025-03-03 14:17:52,843 INFO L226 Difference]: Without dead ends: 4842 [2025-03-03 14:17:52,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:52,861 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 12 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2609 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 [2025-03-03 14:17:52,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2609 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2025-03-03 14:17:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4826. [2025-03-03 14:17:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 3678 states have (on average 1.5921696574225122) internal successors, (5856), 3844 states have internal predecessors, (5856), 894 states have call successors, (894), 248 states have call predecessors, (894), 253 states have return successors, (1137), 873 states have call predecessors, (1137), 888 states have call successors, (1137) [2025-03-03 14:17:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7887 transitions. [2025-03-03 14:17:53,024 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7887 transitions. Word has length 79 [2025-03-03 14:17:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:53,024 INFO L471 AbstractCegarLoop]: Abstraction has 4826 states and 7887 transitions. [2025-03-03 14:17:53,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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) [2025-03-03 14:17:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7887 transitions. [2025-03-03 14:17:53,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-03 14:17:53,026 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:53,026 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:53,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-03 14:17:53,026 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:53,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:53,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1123133246, now seen corresponding path program 1 times [2025-03-03 14:17:53,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620450820] [2025-03-03 14:17:53,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:53,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:53,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:17:53,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:17:53,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:53,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:17:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620450820] [2025-03-03 14:17:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620450820] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:17:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590545064] [2025-03-03 14:17:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:53,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:53,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:53,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:17:53,140 INFO L87 Difference]: Start difference. First operand 4826 states and 7887 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-03 14:17:53,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:53,894 INFO L93 Difference]: Finished difference Result 14429 states and 24389 transitions. [2025-03-03 14:17:53,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:53,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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 87 [2025-03-03 14:17:53,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:53,963 INFO L225 Difference]: With dead ends: 14429 [2025-03-03 14:17:53,963 INFO L226 Difference]: Without dead ends: 9621 [2025-03-03 14:17:53,987 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 [2025-03-03 14:17:53,987 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 881 mSDsluCounter, 3498 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 4461 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:53,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 4461 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:17:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9621 states. [2025-03-03 14:17:54,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9621 to 9552. [2025-03-03 14:17:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9552 states, 7286 states have (on average 1.5897611858358496) internal successors, (11583), 7612 states have internal predecessors, (11583), 1760 states have call successors, (1760), 490 states have call predecessors, (1760), 505 states have return successors, (2681), 1729 states have call predecessors, (2681), 1750 states have call successors, (2681) [2025-03-03 14:17:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9552 states to 9552 states and 16024 transitions. [2025-03-03 14:17:54,338 INFO L78 Accepts]: Start accepts. Automaton has 9552 states and 16024 transitions. Word has length 87 [2025-03-03 14:17:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:54,338 INFO L471 AbstractCegarLoop]: Abstraction has 9552 states and 16024 transitions. [2025-03-03 14:17:54,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-03-03 14:17:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 9552 states and 16024 transitions. [2025-03-03 14:17:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:17:54,339 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:54,339 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:54,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-03 14:17:54,339 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:54,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash 690223456, now seen corresponding path program 1 times [2025-03-03 14:17:54,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:54,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615994422] [2025-03-03 14:17:54,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:54,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:54,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 14:17:54,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:17:54,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:54,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 14:17:54,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:54,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615994422] [2025-03-03 14:17:54,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615994422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:54,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:54,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188420057] [2025-03-03 14:17:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:54,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:54,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:54,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:54,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:54,404 INFO L87 Difference]: Start difference. First operand 9552 states and 16024 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) [2025-03-03 14:17:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:54,743 INFO L93 Difference]: Finished difference Result 19158 states and 32601 transitions. [2025-03-03 14:17:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:54,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2025-03-03 14:17:54,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:54,791 INFO L225 Difference]: With dead ends: 19158 [2025-03-03 14:17:54,792 INFO L226 Difference]: Without dead ends: 9624 [2025-03-03 14:17:54,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:54,823 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 12 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2603 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 [2025-03-03 14:17:54,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2603 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2025-03-03 14:17:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9592. [2025-03-03 14:17:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9592 states, 7322 states have (on average 1.587407812073204) internal successors, (11623), 7640 states have internal predecessors, (11623), 1760 states have call successors, (1760), 506 states have call predecessors, (1760), 509 states have return successors, (2661), 1725 states have call predecessors, (2661), 1750 states have call successors, (2661) [2025-03-03 14:17:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 16044 transitions. [2025-03-03 14:17:55,094 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 16044 transitions. Word has length 88 [2025-03-03 14:17:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:55,094 INFO L471 AbstractCegarLoop]: Abstraction has 9592 states and 16044 transitions. [2025-03-03 14:17:55,094 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) [2025-03-03 14:17:55,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 16044 transitions. [2025-03-03 14:17:55,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:17:55,095 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:55,096 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:55,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-03 14:17:55,096 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:55,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:55,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2032934308, now seen corresponding path program 1 times [2025-03-03 14:17:55,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:55,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573555200] [2025-03-03 14:17:55,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:55,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:17:55,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:17:55,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:55,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:55,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:17:55,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573555200] [2025-03-03 14:17:55,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573555200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:55,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:55,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:17:55,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336724496] [2025-03-03 14:17:55,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:55,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:17:55,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:55,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:17:55,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:17:55,245 INFO L87 Difference]: Start difference. First operand 9592 states and 16044 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2025-03-03 14:17:56,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:56,154 INFO L93 Difference]: Finished difference Result 28799 states and 50625 transitions. [2025-03-03 14:17:56,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:17:56,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 97 [2025-03-03 14:17:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:56,293 INFO L225 Difference]: With dead ends: 28799 [2025-03-03 14:17:56,293 INFO L226 Difference]: Without dead ends: 19225 [2025-03-03 14:17:56,355 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 [2025-03-03 14:17:56,356 INFO L435 NwaCegarLoop]: 963 mSDtfsCounter, 876 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 4469 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:17:56,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 4469 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:17:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19225 states. [2025-03-03 14:17:57,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19225 to 19124. [2025-03-03 14:17:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19124 states, 14604 states have (on average 1.584565872363736) internal successors, (23141), 15234 states have internal predecessors, (23141), 3498 states have call successors, (3498), 1006 states have call predecessors, (3498), 1021 states have return successors, (6642), 3443 states have call predecessors, (6642), 3480 states have call successors, (6642) [2025-03-03 14:17:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19124 states to 19124 states and 33281 transitions. [2025-03-03 14:17:57,239 INFO L78 Accepts]: Start accepts. Automaton has 19124 states and 33281 transitions. Word has length 97 [2025-03-03 14:17:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:57,240 INFO L471 AbstractCegarLoop]: Abstraction has 19124 states and 33281 transitions. [2025-03-03 14:17:57,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2025-03-03 14:17:57,240 INFO L276 IsEmpty]: Start isEmpty. Operand 19124 states and 33281 transitions. [2025-03-03 14:17:57,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 14:17:57,241 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:57,242 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:57,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-03 14:17:57,243 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:57,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash -593621747, now seen corresponding path program 1 times [2025-03-03 14:17:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:57,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776083174] [2025-03-03 14:17:57,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:57,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:17:57,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:17:57,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:57,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 14:17:57,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:57,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776083174] [2025-03-03 14:17:57,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776083174] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:57,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:17:57,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:17:57,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077274563] [2025-03-03 14:17:57,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:57,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:17:57,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:57,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:17:57,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:17:57,320 INFO L87 Difference]: Start difference. First operand 19124 states and 33281 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) [2025-03-03 14:17:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:17:58,171 INFO L93 Difference]: Finished difference Result 38374 states and 68306 transitions. [2025-03-03 14:17:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:17:58,174 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 98 [2025-03-03 14:17:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:17:58,279 INFO L225 Difference]: With dead ends: 38374 [2025-03-03 14:17:58,279 INFO L226 Difference]: Without dead ends: 19268 [2025-03-03 14:17:58,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:17:58,359 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 11 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2603 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 [2025-03-03 14:17:58,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2603 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:17:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19268 states. [2025-03-03 14:17:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 19204. [2025-03-03 14:17:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19204 states, 14676 states have (on average 1.582243118015808) internal successors, (23221), 15306 states have internal predecessors, (23221), 3498 states have call successors, (3498), 1022 states have call predecessors, (3498), 1029 states have return successors, (6614), 3435 states have call predecessors, (6614), 3480 states have call successors, (6614) [2025-03-03 14:17:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19204 states to 19204 states and 33333 transitions. [2025-03-03 14:17:59,082 INFO L78 Accepts]: Start accepts. Automaton has 19204 states and 33333 transitions. Word has length 98 [2025-03-03 14:17:59,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:17:59,082 INFO L471 AbstractCegarLoop]: Abstraction has 19204 states and 33333 transitions. [2025-03-03 14:17:59,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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) [2025-03-03 14:17:59,083 INFO L276 IsEmpty]: Start isEmpty. Operand 19204 states and 33333 transitions. [2025-03-03 14:17:59,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-03-03 14:17:59,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:17:59,084 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:17:59,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-03 14:17:59,085 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:17:59,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:17:59,085 INFO L85 PathProgramCache]: Analyzing trace with hash -727163472, now seen corresponding path program 1 times [2025-03-03 14:17:59,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:17:59,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729785195] [2025-03-03 14:17:59,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:59,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:17:59,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:17:59,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:17:59,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:59,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 14:17:59,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:17:59,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729785195] [2025-03-03 14:17:59,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729785195] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:17:59,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565206938] [2025-03-03 14:17:59,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:17:59,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:17:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:17:59,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:17:59,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:17:59,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-03-03 14:17:59,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-03-03 14:17:59,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:17:59,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:17:59,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 1850 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 14:17:59,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:17:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:17:59,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:17:59,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565206938] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:17:59,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:17:59,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2025-03-03 14:17:59,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654283324] [2025-03-03 14:17:59,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:17:59,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:17:59,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:17:59,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:17:59,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:17:59,664 INFO L87 Difference]: Start difference. First operand 19204 states and 33333 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-03 14:18:04,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:04,793 INFO L93 Difference]: Finished difference Result 68517 states and 126293 transitions. [2025-03-03 14:18:04,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 14:18:04,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 136 [2025-03-03 14:18:04,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:05,164 INFO L225 Difference]: With dead ends: 68517 [2025-03-03 14:18:05,165 INFO L226 Difference]: Without dead ends: 49331 [2025-03-03 14:18:05,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2025-03-03 14:18:05,291 INFO L435 NwaCegarLoop]: 612 mSDtfsCounter, 3097 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 6470 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3279 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 7181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 6470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:05,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3279 Valid, 2378 Invalid, 7181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 6470 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2025-03-03 14:18:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49331 states. [2025-03-03 14:18:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49331 to 48670. [2025-03-03 14:18:06,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48670 states, 37236 states have (on average 1.5764045547319798) internal successors, (58699), 38762 states have internal predecessors, (58699), 8756 states have call successors, (8756), 2534 states have call predecessors, (8756), 2677 states have return successors, (20245), 8741 states have call predecessors, (20245), 8722 states have call successors, (20245) [2025-03-03 14:18:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48670 states to 48670 states and 87700 transitions. [2025-03-03 14:18:07,324 INFO L78 Accepts]: Start accepts. Automaton has 48670 states and 87700 transitions. Word has length 136 [2025-03-03 14:18:07,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:07,325 INFO L471 AbstractCegarLoop]: Abstraction has 48670 states and 87700 transitions. [2025-03-03 14:18:07,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2025-03-03 14:18:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 48670 states and 87700 transitions. [2025-03-03 14:18:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-03-03 14:18:07,327 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:07,327 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:07,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 14:18:07,531 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 [2025-03-03 14:18:07,531 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:07,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:07,531 INFO L85 PathProgramCache]: Analyzing trace with hash 573507473, now seen corresponding path program 1 times [2025-03-03 14:18:07,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:07,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498419368] [2025-03-03 14:18:07,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:07,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 108 statements into 1 equivalence classes. [2025-03-03 14:18:07,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 108 of 108 statements. [2025-03-03 14:18:07,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:07,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:18:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498419368] [2025-03-03 14:18:07,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498419368] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:07,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:07,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:07,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111625717] [2025-03-03 14:18:07,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:07,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:07,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:07,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:07,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:07,657 INFO L87 Difference]: Start difference. First operand 48670 states and 87700 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-03 14:18:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:12,630 INFO L93 Difference]: Finished difference Result 146439 states and 289885 transitions. [2025-03-03 14:18:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:18:12,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2025-03-03 14:18:12,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:13,519 INFO L225 Difference]: With dead ends: 146439 [2025-03-03 14:18:13,519 INFO L226 Difference]: Without dead ends: 97787 [2025-03-03 14:18:14,039 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 [2025-03-03 14:18:14,040 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 872 mSDsluCounter, 3616 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 4612 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:18:14,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 4612 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:18:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97787 states. [2025-03-03 14:18:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97787 to 97430. [2025-03-03 14:18:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97430 states, 74552 states have (on average 1.573706942805022) internal successors, (117323), 77590 states have internal predecessors, (117323), 17480 states have call successors, (17480), 5062 states have call predecessors, (17480), 5397 states have return successors, (53720), 17513 states have call predecessors, (53720), 17414 states have call successors, (53720) [2025-03-03 14:18:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97430 states to 97430 states and 188523 transitions. [2025-03-03 14:18:19,565 INFO L78 Accepts]: Start accepts. Automaton has 97430 states and 188523 transitions. Word has length 108 [2025-03-03 14:18:19,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:19,566 INFO L471 AbstractCegarLoop]: Abstraction has 97430 states and 188523 transitions. [2025-03-03 14:18:19,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-03 14:18:19,566 INFO L276 IsEmpty]: Start isEmpty. Operand 97430 states and 188523 transitions. [2025-03-03 14:18:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-03-03 14:18:19,567 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:19,567 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:19,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-03 14:18:19,567 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:19,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash -248121217, now seen corresponding path program 1 times [2025-03-03 14:18:19,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:19,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318646534] [2025-03-03 14:18:19,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:19,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:19,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 109 statements into 1 equivalence classes. [2025-03-03 14:18:19,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 109 of 109 statements. [2025-03-03 14:18:19,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:19,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 14:18:19,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318646534] [2025-03-03 14:18:19,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318646534] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:19,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:19,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:18:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020322835] [2025-03-03 14:18:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:19,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:18:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:19,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:18:19,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:18:19,638 INFO L87 Difference]: Start difference. First operand 97430 states and 188523 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-03 14:18:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:18:25,372 INFO L93 Difference]: Finished difference Result 195738 states and 396369 transitions. [2025-03-03 14:18:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:18:25,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2025-03-03 14:18:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:18:26,398 INFO L225 Difference]: With dead ends: 195738 [2025-03-03 14:18:26,398 INFO L226 Difference]: Without dead ends: 98326 [2025-03-03 14:18:27,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:18:27,147 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 10 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2603 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 [2025-03-03 14:18:27,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2603 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:18:27,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98326 states. [2025-03-03 14:18:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98326 to 98006. [2025-03-03 14:18:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98006 states, 75080 states have (on average 1.5703116675546085) internal successors, (117899), 78118 states have internal predecessors, (117899), 17480 states have call successors, (17480), 5158 states have call predecessors, (17480), 5445 states have return successors, (53656), 17465 states have call predecessors, (53656), 17414 states have call successors, (53656) [2025-03-03 14:18:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98006 states to 98006 states and 189035 transitions. [2025-03-03 14:18:31,836 INFO L78 Accepts]: Start accepts. Automaton has 98006 states and 189035 transitions. Word has length 109 [2025-03-03 14:18:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:18:31,837 INFO L471 AbstractCegarLoop]: Abstraction has 98006 states and 189035 transitions. [2025-03-03 14:18:31,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-03 14:18:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 98006 states and 189035 transitions. [2025-03-03 14:18:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-03 14:18:31,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:18:31,838 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:18:31,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-03 14:18:31,838 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:18:31,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:18:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1699467077, now seen corresponding path program 1 times [2025-03-03 14:18:31,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:18:31,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019147929] [2025-03-03 14:18:31,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:18:31,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:18:31,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-03 14:18:32,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-03 14:18:32,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:18:32,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:18:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-03-03 14:18:32,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:18:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019147929] [2025-03-03 14:18:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019147929] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:18:32,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:18:32,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:18:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657272856] [2025-03-03 14:18:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:18:32,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:18:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:18:32,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:18:32,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:18:32,285 INFO L87 Difference]: Start difference. First operand 98006 states and 189035 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13)