./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:23:40,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:23:40,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:23:40,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:23:40,544 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:23:40,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:23:40,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:23:40,562 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:23:40,562 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:23:40,562 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:23:40,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:23:40,563 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:23:40,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:23:40,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:23:40,563 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:23:40,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:23:40,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:23:40,563 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:23:40,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:23:40,564 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:23:40,564 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:23:40,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:23:40,565 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:23:40,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:23:40,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:23:40,566 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d [2025-03-08 05:23:40,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:23:40,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:23:40,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:23:40,781 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:23:40,782 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:23:40,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2025-03-08 05:23:41,913 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b22d172/db69aef2be2849f0a2fb8187180ca30d/FLAG8489bf15e [2025-03-08 05:23:42,272 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:23:42,273 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2025-03-08 05:23:42,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b22d172/db69aef2be2849f0a2fb8187180ca30d/FLAG8489bf15e [2025-03-08 05:23:42,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2b22d172/db69aef2be2849f0a2fb8187180ca30d [2025-03-08 05:23:42,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:23:42,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:23:42,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:23:42,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:23:42,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:23:42,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:23:42" (1/1) ... [2025-03-08 05:23:42,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2140d6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:42, skipping insertion in model container [2025-03-08 05:23:42,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:23:42" (1/1) ... [2025-03-08 05:23:42,549 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:23:42,863 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2025-03-08 05:23:42,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:23:42,909 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:23:42,915 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [48] [2025-03-08 05:23:42,916 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [64] [2025-03-08 05:23:42,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [185] [2025-03-08 05:23:42,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [858] [2025-03-08 05:23:42,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1219] [2025-03-08 05:23:42,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [1254] [2025-03-08 05:23:42,917 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1441] [2025-03-08 05:23:42,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2965] [2025-03-08 05:23:42,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2974] [2025-03-08 05:23:42,918 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3065] [2025-03-08 05:23:42,988 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2025-03-08 05:23:43,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:23:43,025 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:23:43,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43 WrapperNode [2025-03-08 05:23:43,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:23:43,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:23:43,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:23:43,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:23:43,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,080 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1104 [2025-03-08 05:23:43,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:23:43,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:23:43,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:23:43,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:23:43,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,091 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,115 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]. [2025-03-08 05:23:43,115 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,115 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,135 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:23:43,158 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:23:43,158 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:23:43,158 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:23:43,159 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (1/1) ... [2025-03-08 05:23:43,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:23:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:43,183 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) [2025-03-08 05:23:43,186 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 [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-08 05:23:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-08 05:23:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-08 05:23:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-08 05:23:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-08 05:23:43,204 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-08 05:23:43,204 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-08 05:23:43,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:23:43,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:23:43,204 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-08 05:23:43,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-08 05:23:43,332 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:23:43,334 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:23:43,383 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L182: #res := ~retValue_acc~2; [2025-03-08 05:23:43,402 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L104: #res := ~retValue_acc~0; [2025-03-08 05:23:43,405 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1516: #res := ~retValue_acc~10; [2025-03-08 05:23:43,417 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1669: #res := ~retValue_acc~11; [2025-03-08 05:23:43,459 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2325: #res#1 := ~retValue_acc~21#1; [2025-03-08 05:23:43,459 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1712-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~13#1; [2025-03-08 05:23:43,488 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2953: #res := ~retValue_acc~25; [2025-03-08 05:23:43,700 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2235: #res#1 := ~retValue_acc~19#1; [2025-03-08 05:23:43,701 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2206-1: stopRequestedInDirection__wrappee__weight_#res#1 := stopRequestedInDirection__wrappee__weight_~retValue_acc~18#1; [2025-03-08 05:23:43,743 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2370: #res := ~retValue_acc~23; [2025-03-08 05:23:43,752 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L143: #res := ~retValue_acc~1; [2025-03-08 05:23:43,884 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L2356-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~22#1; [2025-03-08 05:23:43,934 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1841-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~16#1; [2025-03-08 05:23:43,935 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1854-1: isIdle_#res#1 := isIdle_~retValue_acc~17#1; [2025-03-08 05:23:43,986 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L544: #res := ~retValue_acc~4; [2025-03-08 05:23:44,047 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1216-1: main_#res#1 := main_~retValue_acc~7#1; [2025-03-08 05:23:44,048 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1251-1: valid_product_#res#1 := valid_product_~retValue_acc~9#1; [2025-03-08 05:23:44,058 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L303: #res := ~retValue_acc~3; [2025-03-08 05:23:44,059 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1678: #res := ~retValue_acc~12; [2025-03-08 05:23:44,063 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L855: #res := ~retValue_acc~5; [2025-03-08 05:23:44,180 INFO L? ?]: Removed 449 outVars from TransFormulas that were not future-live. [2025-03-08 05:23:44,180 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:23:44,205 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:23:44,206 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:23:44,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:23:44 BoogieIcfgContainer [2025-03-08 05:23:44,207 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:23:44,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:23:44,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:23:44,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:23:44,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:23:42" (1/3) ... [2025-03-08 05:23:44,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553824d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:23:44, skipping insertion in model container [2025-03-08 05:23:44,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:23:43" (2/3) ... [2025-03-08 05:23:44,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553824d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:23:44, skipping insertion in model container [2025-03-08 05:23:44,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:23:44" (3/3) ... [2025-03-08 05:23:44,214 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2025-03-08 05:23:44,223 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:23:44,226 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product19.cil.c that has 26 procedures, 565 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:23:44,277 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:23:44,285 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;@6fdb5c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:23:44,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:23:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 565 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 460 states have internal predecessors, (740), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2025-03-08 05:23:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-08 05:23:44,306 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:44,307 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:44,308 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:44,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1658906506, now seen corresponding path program 1 times [2025-03-08 05:23:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735188582] [2025-03-08 05:23:44,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:44,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:44,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 05:23:44,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 05:23:44,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:44,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:44,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:44,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735188582] [2025-03-08 05:23:44,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735188582] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:44,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137560496] [2025-03-08 05:23:44,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:44,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:44,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:44,802 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) [2025-03-08 05:23:44,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:23:44,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-08 05:23:45,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-08 05:23:45,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:45,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:45,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 05:23:45,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:23:45,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:45,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137560496] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:45,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:45,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-08 05:23:45,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126461898] [2025-03-08 05:23:45,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:45,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 05:23:45,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:45,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 05:23:45,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:23:45,233 INFO L87 Difference]: Start difference. First operand has 565 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 460 states have internal predecessors, (740), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:23:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:45,284 INFO L93 Difference]: Finished difference Result 586 states and 968 transitions. [2025-03-08 05:23:45,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 05:23:45,287 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2025-03-08 05:23:45,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:45,302 INFO L225 Difference]: With dead ends: 586 [2025-03-08 05:23:45,303 INFO L226 Difference]: Without dead ends: 557 [2025-03-08 05:23:45,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:23:45,308 INFO L435 NwaCegarLoop]: 930 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:45,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-08 05:23:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-08 05:23:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 433 states have (on average 1.6859122401847575) internal successors, (730), 452 states have internal predecessors, (730), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:45,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 923 transitions. [2025-03-08 05:23:45,380 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 923 transitions. Word has length 125 [2025-03-08 05:23:45,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:45,381 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 923 transitions. [2025-03-08 05:23:45,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:23:45,382 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 923 transitions. [2025-03-08 05:23:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-08 05:23:45,388 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:45,388 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:45,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 05:23:45,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 05:23:45,591 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:45,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:45,592 INFO L85 PathProgramCache]: Analyzing trace with hash -118047244, now seen corresponding path program 1 times [2025-03-08 05:23:45,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:45,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739382412] [2025-03-08 05:23:45,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:45,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-08 05:23:45,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 05:23:45,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:45,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:45,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:45,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739382412] [2025-03-08 05:23:45,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739382412] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:45,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9939153] [2025-03-08 05:23:45,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:45,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:45,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:45,805 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) [2025-03-08 05:23:45,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:23:45,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-08 05:23:46,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-08 05:23:46,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:46,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:46,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:46,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:46,217 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:46,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9939153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:46,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:46,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:23:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538690073] [2025-03-08 05:23:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:46,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:46,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:46,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:46,220 INFO L87 Difference]: Start difference. First operand 557 states and 923 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:46,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:46,303 INFO L93 Difference]: Finished difference Result 1105 states and 1838 transitions. [2025-03-08 05:23:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:23:46,307 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2025-03-08 05:23:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:46,313 INFO L225 Difference]: With dead ends: 1105 [2025-03-08 05:23:46,313 INFO L226 Difference]: Without dead ends: 557 [2025-03-08 05:23:46,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:46,320 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 5 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:46,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2727 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-08 05:23:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-08 05:23:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 433 states have (on average 1.6836027713625865) internal successors, (729), 452 states have internal predecessors, (729), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:46,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 922 transitions. [2025-03-08 05:23:46,351 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 922 transitions. Word has length 126 [2025-03-08 05:23:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:46,352 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 922 transitions. [2025-03-08 05:23:46,352 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:46,352 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 922 transitions. [2025-03-08 05:23:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-08 05:23:46,356 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:46,357 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:46,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:46,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 05:23:46,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:46,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash -51065864, now seen corresponding path program 1 times [2025-03-08 05:23:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950597878] [2025-03-08 05:23:46,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:46,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:46,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:23:46,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:23:46,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:46,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:46,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950597878] [2025-03-08 05:23:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950597878] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693914536] [2025-03-08 05:23:46,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:46,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:46,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:46,725 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) [2025-03-08 05:23:46,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:23:46,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-08 05:23:47,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-08 05:23:47,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:47,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:47,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:47,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:47,079 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:47,080 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:47,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693914536] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:47,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:47,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:23:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429675771] [2025-03-08 05:23:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:47,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:47,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:47,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:47,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:47,081 INFO L87 Difference]: Start difference. First operand 557 states and 922 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:47,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:47,125 INFO L93 Difference]: Finished difference Result 1105 states and 1836 transitions. [2025-03-08 05:23:47,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:23:47,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2025-03-08 05:23:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:47,129 INFO L225 Difference]: With dead ends: 1105 [2025-03-08 05:23:47,129 INFO L226 Difference]: Without dead ends: 557 [2025-03-08 05:23:47,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:47,132 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 4 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:47,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2727 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-03-08 05:23:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2025-03-08 05:23:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 433 states have (on average 1.6812933025404158) internal successors, (728), 452 states have internal predecessors, (728), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 921 transitions. [2025-03-08 05:23:47,153 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 921 transitions. Word has length 128 [2025-03-08 05:23:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:47,153 INFO L471 AbstractCegarLoop]: Abstraction has 557 states and 921 transitions. [2025-03-08 05:23:47,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:47,153 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 921 transitions. [2025-03-08 05:23:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-03-08 05:23:47,157 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:47,157 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:47,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:47,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:47,361 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:47,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash 973147860, now seen corresponding path program 1 times [2025-03-08 05:23:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028896028] [2025-03-08 05:23:47,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:47,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 05:23:47,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 05:23:47,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:47,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028896028] [2025-03-08 05:23:47,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028896028] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362053917] [2025-03-08 05:23:47,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:47,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:47,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:47,484 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) [2025-03-08 05:23:47,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:23:47,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-03-08 05:23:47,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-03-08 05:23:47,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:47,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:47,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:47,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:47,794 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:47,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362053917] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:47,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:47,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:23:47,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711901384] [2025-03-08 05:23:47,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:47,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:47,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:47,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:47,796 INFO L87 Difference]: Start difference. First operand 557 states and 921 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:47,867 INFO L93 Difference]: Finished difference Result 1112 states and 1843 transitions. [2025-03-08 05:23:47,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:23:47,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2025-03-08 05:23:47,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:47,871 INFO L225 Difference]: With dead ends: 1112 [2025-03-08 05:23:47,871 INFO L226 Difference]: Without dead ends: 566 [2025-03-08 05:23:47,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:23:47,874 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 13 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:47,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2724 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-08 05:23:47,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-08 05:23:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 460 states have internal predecessors, (740), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 933 transitions. [2025-03-08 05:23:47,892 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 933 transitions. Word has length 130 [2025-03-08 05:23:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:47,892 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 933 transitions. [2025-03-08 05:23:47,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 933 transitions. [2025-03-08 05:23:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-08 05:23:47,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:47,895 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:47,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:23:48,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:48,096 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:48,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2056266739, now seen corresponding path program 1 times [2025-03-08 05:23:48,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:48,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498709407] [2025-03-08 05:23:48,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:48,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-08 05:23:48,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 05:23:48,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:48,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498709407] [2025-03-08 05:23:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498709407] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499895868] [2025-03-08 05:23:48,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:48,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:48,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:48,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:48,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 05:23:48,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-08 05:23:48,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-08 05:23:48,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:48,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:48,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:48,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:48,519 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:48,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499895868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:48,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:48,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:23:48,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935578154] [2025-03-08 05:23:48,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:48,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:48,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:48,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:48,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:48,520 INFO L87 Difference]: Start difference. First operand 566 states and 933 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:48,572 INFO L93 Difference]: Finished difference Result 1114 states and 1844 transitions. [2025-03-08 05:23:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:23:48,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2025-03-08 05:23:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:48,576 INFO L225 Difference]: With dead ends: 1114 [2025-03-08 05:23:48,576 INFO L226 Difference]: Without dead ends: 566 [2025-03-08 05:23:48,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:23:48,578 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 11 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:48,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2724 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-08 05:23:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-08 05:23:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 441 states have (on average 1.6757369614512472) internal successors, (739), 460 states have internal predecessors, (739), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 932 transitions. [2025-03-08 05:23:48,602 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 932 transitions. Word has length 131 [2025-03-08 05:23:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:48,602 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 932 transitions. [2025-03-08 05:23:48,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 932 transitions. [2025-03-08 05:23:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-03-08 05:23:48,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:48,605 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:48,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 05:23:48,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:48,806 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:48,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:48,806 INFO L85 PathProgramCache]: Analyzing trace with hash 681411089, now seen corresponding path program 1 times [2025-03-08 05:23:48,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:48,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91588109] [2025-03-08 05:23:48,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:48,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:48,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 05:23:48,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 05:23:48,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:48,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:48,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:48,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91588109] [2025-03-08 05:23:48,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91588109] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:48,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051265191] [2025-03-08 05:23:48,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:48,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:48,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:48,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:48,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 05:23:49,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-03-08 05:23:49,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-03-08 05:23:49,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:49,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:49,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:49,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:49,210 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051265191] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:49,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:23:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47797497] [2025-03-08 05:23:49,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:49,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:49,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:49,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:49,211 INFO L87 Difference]: Start difference. First operand 566 states and 932 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:49,263 INFO L93 Difference]: Finished difference Result 1114 states and 1843 transitions. [2025-03-08 05:23:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:23:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2025-03-08 05:23:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:49,267 INFO L225 Difference]: With dead ends: 1114 [2025-03-08 05:23:49,267 INFO L226 Difference]: Without dead ends: 566 [2025-03-08 05:23:49,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:23:49,269 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 10 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2724 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:49,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2724 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-03-08 05:23:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2025-03-08 05:23:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 441 states have (on average 1.6734693877551021) internal successors, (738), 460 states have internal predecessors, (738), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 931 transitions. [2025-03-08 05:23:49,291 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 931 transitions. Word has length 132 [2025-03-08 05:23:49,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:49,291 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 931 transitions. [2025-03-08 05:23:49,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 931 transitions. [2025-03-08 05:23:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2025-03-08 05:23:49,293 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:49,294 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:49,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:49,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:49,494 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:49,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash 418756368, now seen corresponding path program 1 times [2025-03-08 05:23:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:49,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662190368] [2025-03-08 05:23:49,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:49,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:49,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-08 05:23:49,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-08 05:23:49,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:49,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:49,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662190368] [2025-03-08 05:23:49,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662190368] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:49,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449532828] [2025-03-08 05:23:49,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:49,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:49,652 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:49,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 05:23:49,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 133 statements into 1 equivalence classes. [2025-03-08 05:23:49,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 133 of 133 statements. [2025-03-08 05:23:49,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:49,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:49,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:49,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:23:49,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:49,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449532828] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:49,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:23:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931598238] [2025-03-08 05:23:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:49,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:49,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:49,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:23:49,980 INFO L87 Difference]: Start difference. First operand 566 states and 931 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:50,098 INFO L93 Difference]: Finished difference Result 1140 states and 1890 transitions. [2025-03-08 05:23:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:23:50,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2025-03-08 05:23:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:50,103 INFO L225 Difference]: With dead ends: 1140 [2025-03-08 05:23:50,103 INFO L226 Difference]: Without dead ends: 581 [2025-03-08 05:23:50,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:23:50,105 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 76 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:50,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2615 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:23:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-03-08 05:23:50,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 566. [2025-03-08 05:23:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 441 states have (on average 1.6621315192743764) internal successors, (733), 460 states have internal predecessors, (733), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 926 transitions. [2025-03-08 05:23:50,124 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 926 transitions. Word has length 133 [2025-03-08 05:23:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:50,124 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 926 transitions. [2025-03-08 05:23:50,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 926 transitions. [2025-03-08 05:23:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-08 05:23:50,127 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:50,127 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:50,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:50,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:50,332 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:50,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1805229524, now seen corresponding path program 1 times [2025-03-08 05:23:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304811698] [2025-03-08 05:23:50,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:50,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:50,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 05:23:50,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 05:23:50,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:50,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:50,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304811698] [2025-03-08 05:23:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304811698] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846766845] [2025-03-08 05:23:50,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:50,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:50,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:50,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:50,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 05:23:50,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 05:23:50,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 05:23:50,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:50,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:50,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:50,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:23:50,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:50,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846766845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:50,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:50,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:23:50,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930881693] [2025-03-08 05:23:50,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:50,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:50,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:50,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:50,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:23:50,845 INFO L87 Difference]: Start difference. First operand 566 states and 926 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:50,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:50,944 INFO L93 Difference]: Finished difference Result 1140 states and 1880 transitions. [2025-03-08 05:23:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:23:50,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2025-03-08 05:23:50,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:50,948 INFO L225 Difference]: With dead ends: 1140 [2025-03-08 05:23:50,948 INFO L226 Difference]: Without dead ends: 581 [2025-03-08 05:23:50,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:23:50,965 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 75 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:50,965 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2615 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:23:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-03-08 05:23:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 566. [2025-03-08 05:23:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 441 states have (on average 1.6507936507936507) internal successors, (728), 460 states have internal predecessors, (728), 99 states have call successors, (99), 26 states have call predecessors, (99), 25 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 921 transitions. [2025-03-08 05:23:50,979 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 921 transitions. Word has length 135 [2025-03-08 05:23:50,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:50,980 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 921 transitions. [2025-03-08 05:23:50,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 921 transitions. [2025-03-08 05:23:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-08 05:23:50,982 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:50,982 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:50,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:51,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-08 05:23:51,183 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:51,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash -674072272, now seen corresponding path program 1 times [2025-03-08 05:23:51,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:51,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145232778] [2025-03-08 05:23:51,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:51,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:51,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 05:23:51,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 05:23:51,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:51,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:51,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:51,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145232778] [2025-03-08 05:23:51,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145232778] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:51,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827998942] [2025-03-08 05:23:51,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:51,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:51,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:51,341 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:51,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 05:23:51,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 05:23:51,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 05:23:51,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:51,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:51,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:51,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:23:51,630 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:51,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827998942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:51,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:51,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:23:51,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353143118] [2025-03-08 05:23:51,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:51,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:51,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:51,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:51,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:23:51,631 INFO L87 Difference]: Start difference. First operand 566 states and 921 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:51,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:51,777 INFO L93 Difference]: Finished difference Result 1191 states and 1953 transitions. [2025-03-08 05:23:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:23:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 137 [2025-03-08 05:23:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:51,781 INFO L225 Difference]: With dead ends: 1191 [2025-03-08 05:23:51,782 INFO L226 Difference]: Without dead ends: 647 [2025-03-08 05:23:51,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:23:51,784 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 130 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:51,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2646 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:23:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2025-03-08 05:23:51,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 617. [2025-03-08 05:23:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 491 states have (on average 1.6558044806517311) internal successors, (813), 510 states have internal predecessors, (813), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1006 transitions. [2025-03-08 05:23:51,801 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1006 transitions. Word has length 137 [2025-03-08 05:23:51,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:51,802 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 1006 transitions. [2025-03-08 05:23:51,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1006 transitions. [2025-03-08 05:23:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 05:23:51,804 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:51,804 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:51,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:52,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:52,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:52,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1457063116, now seen corresponding path program 1 times [2025-03-08 05:23:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:52,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497049309] [2025-03-08 05:23:52,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:52,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:23:52,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:23:52,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:52,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497049309] [2025-03-08 05:23:52,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497049309] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:52,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113403942] [2025-03-08 05:23:52,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:52,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:52,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:52,176 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:52,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 05:23:52,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:23:52,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:23:52,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:52,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:52,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:52,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:23:52,489 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:52,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113403942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:52,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:52,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:23:52,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748829439] [2025-03-08 05:23:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:52,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:52,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:52,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:23:52,490 INFO L87 Difference]: Start difference. First operand 617 states and 1006 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:52,632 INFO L93 Difference]: Finished difference Result 1206 states and 1977 transitions. [2025-03-08 05:23:52,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:23:52,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2025-03-08 05:23:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:52,637 INFO L225 Difference]: With dead ends: 1206 [2025-03-08 05:23:52,637 INFO L226 Difference]: Without dead ends: 647 [2025-03-08 05:23:52,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:23:52,639 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 124 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:52,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2619 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:23:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2025-03-08 05:23:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 617. [2025-03-08 05:23:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 491 states have (on average 1.645621181262729) internal successors, (808), 510 states have internal predecessors, (808), 99 states have call successors, (99), 27 states have call predecessors, (99), 26 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-08 05:23:52,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1001 transitions. [2025-03-08 05:23:52,656 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1001 transitions. Word has length 138 [2025-03-08 05:23:52,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:52,656 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 1001 transitions. [2025-03-08 05:23:52,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1001 transitions. [2025-03-08 05:23:52,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 05:23:52,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:52,658 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:52,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 05:23:52,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 05:23:52,859 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:52,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2090516656, now seen corresponding path program 1 times [2025-03-08 05:23:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011203307] [2025-03-08 05:23:52,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:52,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:23:52,878 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:23:52,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:52,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011203307] [2025-03-08 05:23:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011203307] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906601240] [2025-03-08 05:23:52,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:52,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:52,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:52,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 05:23:53,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:23:53,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:23:53,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:53,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:53,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:23:53,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-08 05:23:53,322 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906601240] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:53,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:53,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-08 05:23:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733863093] [2025-03-08 05:23:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:53,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:23:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:53,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:23:53,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:23:53,323 INFO L87 Difference]: Start difference. First operand 617 states and 1001 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:53,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:53,443 INFO L93 Difference]: Finished difference Result 1199 states and 1957 transitions. [2025-03-08 05:23:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:23:53,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2025-03-08 05:23:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:53,449 INFO L225 Difference]: With dead ends: 1199 [2025-03-08 05:23:53,449 INFO L226 Difference]: Without dead ends: 655 [2025-03-08 05:23:53,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:23:53,452 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 113 mSDsluCounter, 5257 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:53,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6148 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:23:53,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2025-03-08 05:23:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 636. [2025-03-08 05:23:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 507 states have (on average 1.6449704142011834) internal successors, (834), 528 states have internal predecessors, (834), 100 states have call successors, (100), 27 states have call predecessors, (100), 28 states have return successors, (97), 93 states have call predecessors, (97), 95 states have call successors, (97) [2025-03-08 05:23:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1031 transitions. [2025-03-08 05:23:53,472 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1031 transitions. Word has length 138 [2025-03-08 05:23:53,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:53,473 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1031 transitions. [2025-03-08 05:23:53,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1031 transitions. [2025-03-08 05:23:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-03-08 05:23:53,476 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:53,476 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:53,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:53,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 05:23:53,677 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:53,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash 300990545, now seen corresponding path program 1 times [2025-03-08 05:23:53,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756564561] [2025-03-08 05:23:53,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:53,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:23:53,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:23:53,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:53,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756564561] [2025-03-08 05:23:53,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756564561] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:53,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020305832] [2025-03-08 05:23:53,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:53,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:53,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:53,739 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:53,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 05:23:53,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-03-08 05:23:54,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-03-08 05:23:54,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:54,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:54,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 1868 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:23:54,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:54,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:54,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020305832] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:54,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 05:23:54,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326331887] [2025-03-08 05:23:54,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:54,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:23:54,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:54,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:23:54,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:23:54,064 INFO L87 Difference]: Start difference. First operand 636 states and 1031 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:54,142 INFO L93 Difference]: Finished difference Result 1137 states and 1857 transitions. [2025-03-08 05:23:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:23:54,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2025-03-08 05:23:54,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:54,147 INFO L225 Difference]: With dead ends: 1137 [2025-03-08 05:23:54,147 INFO L226 Difference]: Without dead ends: 660 [2025-03-08 05:23:54,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:23:54,149 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 86 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5345 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:54,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5345 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2025-03-08 05:23:54,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 655. [2025-03-08 05:23:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 523 states have (on average 1.644359464627151) internal successors, (860), 546 states have internal predecessors, (860), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:23:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1061 transitions. [2025-03-08 05:23:54,170 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1061 transitions. Word has length 138 [2025-03-08 05:23:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:54,170 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1061 transitions. [2025-03-08 05:23:54,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1061 transitions. [2025-03-08 05:23:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 05:23:54,172 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:54,172 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:54,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-08 05:23:54,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 05:23:54,373 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:54,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1856240326, now seen corresponding path program 1 times [2025-03-08 05:23:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:54,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248055065] [2025-03-08 05:23:54,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:54,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:23:54,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:23:54,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:54,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248055065] [2025-03-08 05:23:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248055065] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025652518] [2025-03-08 05:23:54,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:54,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:54,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:54,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 05:23:54,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:23:54,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:23:54,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:54,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:54,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:23:54,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-08 05:23:54,745 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025652518] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:54,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:54,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:23:54,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109572523] [2025-03-08 05:23:54,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:54,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:23:54,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:54,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:23:54,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:23:54,747 INFO L87 Difference]: Start difference. First operand 655 states and 1061 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:54,786 INFO L93 Difference]: Finished difference Result 1204 states and 1967 transitions. [2025-03-08 05:23:54,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:23:54,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2025-03-08 05:23:54,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:54,790 INFO L225 Difference]: With dead ends: 1204 [2025-03-08 05:23:54,790 INFO L226 Difference]: Without dead ends: 655 [2025-03-08 05:23:54,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:23:54,793 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 13 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:54,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2693 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:54,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2025-03-08 05:23:54,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2025-03-08 05:23:54,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 523 states have (on average 1.6367112810707456) internal successors, (856), 546 states have internal predecessors, (856), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:23:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1057 transitions. [2025-03-08 05:23:54,811 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1057 transitions. Word has length 139 [2025-03-08 05:23:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:54,811 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1057 transitions. [2025-03-08 05:23:54,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2025-03-08 05:23:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1057 transitions. [2025-03-08 05:23:54,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 05:23:54,813 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:54,814 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:54,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:55,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 05:23:55,014 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:55,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1690754188, now seen corresponding path program 1 times [2025-03-08 05:23:55,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:55,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792438818] [2025-03-08 05:23:55,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:55,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:55,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:23:55,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:23:55,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:55,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:55,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792438818] [2025-03-08 05:23:55,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792438818] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:55,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643642131] [2025-03-08 05:23:55,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:55,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:55,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:55,080 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:55,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 05:23:55,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:23:55,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:23:55,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:55,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:55,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:23:55,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:55,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:55,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643642131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:55,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:55,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-08 05:23:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226444188] [2025-03-08 05:23:55,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:55,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:23:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:55,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:23:55,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:23:55,398 INFO L87 Difference]: Start difference. First operand 655 states and 1057 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:55,479 INFO L93 Difference]: Finished difference Result 1167 states and 1904 transitions. [2025-03-08 05:23:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:23:55,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2025-03-08 05:23:55,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:55,483 INFO L225 Difference]: With dead ends: 1167 [2025-03-08 05:23:55,483 INFO L226 Difference]: Without dead ends: 690 [2025-03-08 05:23:55,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:23:55,485 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 95 mSDsluCounter, 4408 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5306 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:55,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5306 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:23:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2025-03-08 05:23:55,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 655. [2025-03-08 05:23:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 523 states have (on average 1.6367112810707456) internal successors, (856), 546 states have internal predecessors, (856), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:23:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1057 transitions. [2025-03-08 05:23:55,503 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1057 transitions. Word has length 139 [2025-03-08 05:23:55,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:55,503 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1057 transitions. [2025-03-08 05:23:55,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1057 transitions. [2025-03-08 05:23:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-03-08 05:23:55,506 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:55,506 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:55,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-03-08 05:23:55,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:55,706 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:55,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash 594519973, now seen corresponding path program 1 times [2025-03-08 05:23:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320566114] [2025-03-08 05:23:55,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:55,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:23:55,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:23:55,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:55,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:23:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320566114] [2025-03-08 05:23:55,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320566114] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742893274] [2025-03-08 05:23:55,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:55,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:55,772 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:55,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 05:23:55,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-08 05:23:56,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-08 05:23:56,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:56,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:56,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:23:56,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:56,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:56,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742893274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:56,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:56,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-08 05:23:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446352130] [2025-03-08 05:23:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:56,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:23:56,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:56,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:23:56,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:23:56,094 INFO L87 Difference]: Start difference. First operand 655 states and 1057 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:56,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:56,187 INFO L93 Difference]: Finished difference Result 1152 states and 1878 transitions. [2025-03-08 05:23:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:23:56,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2025-03-08 05:23:56,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:56,191 INFO L225 Difference]: With dead ends: 1152 [2025-03-08 05:23:56,191 INFO L226 Difference]: Without dead ends: 675 [2025-03-08 05:23:56,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:23:56,195 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 113 mSDsluCounter, 5235 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:56,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6122 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:23:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2025-03-08 05:23:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 655. [2025-03-08 05:23:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 523 states have (on average 1.6367112810707456) internal successors, (856), 546 states have internal predecessors, (856), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:23:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1057 transitions. [2025-03-08 05:23:56,211 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1057 transitions. Word has length 139 [2025-03-08 05:23:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:56,211 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1057 transitions. [2025-03-08 05:23:56,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1057 transitions. [2025-03-08 05:23:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-03-08 05:23:56,214 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:56,215 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:56,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:56,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-08 05:23:56,415 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:56,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2091574488, now seen corresponding path program 1 times [2025-03-08 05:23:56,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:56,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048852471] [2025-03-08 05:23:56,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:56,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:56,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 05:23:56,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 05:23:56,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:56,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:23:56,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048852471] [2025-03-08 05:23:56,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048852471] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:56,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016590946] [2025-03-08 05:23:56,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:56,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:56,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:56,503 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:56,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 05:23:56,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 140 statements into 1 equivalence classes. [2025-03-08 05:23:56,757 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 140 of 140 statements. [2025-03-08 05:23:56,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:56,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:56,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:23:56,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-03-08 05:23:56,815 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:56,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016590946] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:56,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:56,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-08 05:23:56,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718292217] [2025-03-08 05:23:56,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:56,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:23:56,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:56,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:23:56,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:23:56,817 INFO L87 Difference]: Start difference. First operand 655 states and 1057 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:56,929 INFO L93 Difference]: Finished difference Result 1152 states and 1879 transitions. [2025-03-08 05:23:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:23:56,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2025-03-08 05:23:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:56,934 INFO L225 Difference]: With dead ends: 1152 [2025-03-08 05:23:56,934 INFO L226 Difference]: Without dead ends: 675 [2025-03-08 05:23:56,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:23:56,937 INFO L435 NwaCegarLoop]: 887 mSDtfsCounter, 121 mSDsluCounter, 5225 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6112 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:56,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6112 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:23:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2025-03-08 05:23:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 655. [2025-03-08 05:23:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 523 states have (on average 1.6367112810707456) internal successors, (856), 546 states have internal predecessors, (856), 101 states have call successors, (101), 27 states have call predecessors, (101), 30 states have return successors, (100), 94 states have call predecessors, (100), 96 states have call successors, (100) [2025-03-08 05:23:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1057 transitions. [2025-03-08 05:23:56,959 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1057 transitions. Word has length 140 [2025-03-08 05:23:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:56,959 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1057 transitions. [2025-03-08 05:23:56,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-08 05:23:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1057 transitions. [2025-03-08 05:23:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-08 05:23:56,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:56,962 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:56,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:57,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-08 05:23:57,163 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:57,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:57,164 INFO L85 PathProgramCache]: Analyzing trace with hash -924447426, now seen corresponding path program 1 times [2025-03-08 05:23:57,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:57,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504895961] [2025-03-08 05:23:57,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:57,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-08 05:23:57,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-08 05:23:57,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:57,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-08 05:23:57,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:57,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504895961] [2025-03-08 05:23:57,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504895961] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:57,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355065091] [2025-03-08 05:23:57,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:57,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:57,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:57,250 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:57,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 05:23:57,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-08 05:23:57,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-08 05:23:57,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:57,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:57,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:23:57,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:23:57,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355065091] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:57,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:23:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424561922] [2025-03-08 05:23:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:57,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:23:57,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:57,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:23:57,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:23:57,599 INFO L87 Difference]: Start difference. First operand 655 states and 1057 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:23:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:57,987 INFO L93 Difference]: Finished difference Result 1135 states and 1873 transitions. [2025-03-08 05:23:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:23:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2025-03-08 05:23:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:57,991 INFO L225 Difference]: With dead ends: 1135 [2025-03-08 05:23:57,991 INFO L226 Difference]: Without dead ends: 663 [2025-03-08 05:23:57,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:23:57,994 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 858 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:57,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2293 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:23:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2025-03-08 05:23:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2025-03-08 05:23:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 530 states have (on average 1.6377358490566039) internal successors, (868), 553 states have internal predecessors, (868), 101 states have call successors, (101), 28 states have call predecessors, (101), 31 states have return successors, (101), 94 states have call predecessors, (101), 96 states have call successors, (101) [2025-03-08 05:23:58,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1070 transitions. [2025-03-08 05:23:58,016 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1070 transitions. Word has length 141 [2025-03-08 05:23:58,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:58,016 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1070 transitions. [2025-03-08 05:23:58,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:23:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1070 transitions. [2025-03-08 05:23:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-08 05:23:58,021 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:58,021 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:58,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:58,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 05:23:58,222 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:58,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1385987432, now seen corresponding path program 1 times [2025-03-08 05:23:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:58,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075360728] [2025-03-08 05:23:58,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:58,235 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 05:23:58,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 05:23:58,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:58,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-08 05:23:58,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075360728] [2025-03-08 05:23:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075360728] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124570690] [2025-03-08 05:23:58,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:58,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:58,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:58,288 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:58,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 05:23:58,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-08 05:23:58,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-08 05:23:58,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:58,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:58,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:23:58,568 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:23:58,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:58,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124570690] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:58,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:23:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748090163] [2025-03-08 05:23:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:58,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:23:58,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:58,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:23:58,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:23:58,663 INFO L87 Difference]: Start difference. First operand 663 states and 1070 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:23:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:23:59,028 INFO L93 Difference]: Finished difference Result 1151 states and 1896 transitions. [2025-03-08 05:23:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:23:59,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2025-03-08 05:23:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:23:59,033 INFO L225 Difference]: With dead ends: 1151 [2025-03-08 05:23:59,034 INFO L226 Difference]: Without dead ends: 671 [2025-03-08 05:23:59,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:23:59,036 INFO L435 NwaCegarLoop]: 888 mSDtfsCounter, 855 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:23:59,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2290 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:23:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2025-03-08 05:23:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2025-03-08 05:23:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 537 states have (on average 1.638733705772812) internal successors, (880), 560 states have internal predecessors, (880), 101 states have call successors, (101), 29 states have call predecessors, (101), 32 states have return successors, (102), 94 states have call predecessors, (102), 96 states have call successors, (102) [2025-03-08 05:23:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1083 transitions. [2025-03-08 05:23:59,055 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1083 transitions. Word has length 143 [2025-03-08 05:23:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:23:59,055 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 1083 transitions. [2025-03-08 05:23:59,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:23:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1083 transitions. [2025-03-08 05:23:59,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-03-08 05:23:59,058 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:23:59,058 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:23:59,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-08 05:23:59,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-08 05:23:59,258 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:23:59,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:23:59,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1312400286, now seen corresponding path program 1 times [2025-03-08 05:23:59,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:23:59,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558684878] [2025-03-08 05:23:59,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:59,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:23:59,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-08 05:23:59,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-08 05:23:59,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:59,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:23:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:23:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558684878] [2025-03-08 05:23:59,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558684878] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:23:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220502484] [2025-03-08 05:23:59,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:23:59,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:23:59,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:23:59,320 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:23:59,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 05:23:59,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 145 statements into 1 equivalence classes. [2025-03-08 05:23:59,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 145 of 145 statements. [2025-03-08 05:23:59,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:23:59,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:23:59,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 1874 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:23:59,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:23:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:23:59,658 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:23:59,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220502484] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:23:59,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:23:59,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:23:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486040340] [2025-03-08 05:23:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:23:59,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:23:59,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:23:59,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:23:59,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:23:59,659 INFO L87 Difference]: Start difference. First operand 671 states and 1083 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:00,000 INFO L93 Difference]: Finished difference Result 1167 states and 1919 transitions. [2025-03-08 05:24:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:00,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2025-03-08 05:24:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:00,004 INFO L225 Difference]: With dead ends: 1167 [2025-03-08 05:24:00,004 INFO L226 Difference]: Without dead ends: 679 [2025-03-08 05:24:00,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:00,006 INFO L435 NwaCegarLoop]: 885 mSDtfsCounter, 836 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:00,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 2287 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:24:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-03-08 05:24:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2025-03-08 05:24:00,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 544 states have (on average 1.6397058823529411) internal successors, (892), 567 states have internal predecessors, (892), 101 states have call successors, (101), 30 states have call predecessors, (101), 33 states have return successors, (103), 94 states have call predecessors, (103), 96 states have call successors, (103) [2025-03-08 05:24:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1096 transitions. [2025-03-08 05:24:00,025 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1096 transitions. Word has length 145 [2025-03-08 05:24:00,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:00,025 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1096 transitions. [2025-03-08 05:24:00,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1096 transitions. [2025-03-08 05:24:00,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-08 05:24:00,028 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:00,028 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:00,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-08 05:24:00,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:00,228 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:00,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash 461447534, now seen corresponding path program 1 times [2025-03-08 05:24:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654845351] [2025-03-08 05:24:00,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:00,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-08 05:24:00,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-08 05:24:00,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:00,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 05:24:00,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654845351] [2025-03-08 05:24:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654845351] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096991076] [2025-03-08 05:24:00,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:00,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:00,281 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:00,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-08 05:24:00,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-08 05:24:00,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-08 05:24:00,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:00,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:00,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:00,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:00,644 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:00,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096991076] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:00,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:00,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:24:00,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317533508] [2025-03-08 05:24:00,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:00,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:00,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:00,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:00,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:00,646 INFO L87 Difference]: Start difference. First operand 679 states and 1096 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:00,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:00,932 INFO L93 Difference]: Finished difference Result 1183 states and 1942 transitions. [2025-03-08 05:24:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:00,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2025-03-08 05:24:00,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:00,936 INFO L225 Difference]: With dead ends: 1183 [2025-03-08 05:24:00,936 INFO L226 Difference]: Without dead ends: 687 [2025-03-08 05:24:00,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:00,939 INFO L435 NwaCegarLoop]: 882 mSDtfsCounter, 827 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:00,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2284 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:24:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2025-03-08 05:24:00,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2025-03-08 05:24:00,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 551 states have (on average 1.6406533575317603) internal successors, (904), 574 states have internal predecessors, (904), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-08 05:24:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1109 transitions. [2025-03-08 05:24:00,955 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1109 transitions. Word has length 147 [2025-03-08 05:24:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:00,956 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 1109 transitions. [2025-03-08 05:24:00,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-08 05:24:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1109 transitions. [2025-03-08 05:24:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-08 05:24:00,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:00,959 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:00,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-08 05:24:01,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:01,160 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:01,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash 928015230, now seen corresponding path program 1 times [2025-03-08 05:24:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:01,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332622591] [2025-03-08 05:24:01,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:01,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:01,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-08 05:24:01,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-08 05:24:01,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:01,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:01,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332622591] [2025-03-08 05:24:01,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332622591] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:01,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365238218] [2025-03-08 05:24:01,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:01,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:01,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:01,226 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:01,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-08 05:24:01,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-08 05:24:01,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-08 05:24:01,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:01,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:01,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:01,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:01,636 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:01,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365238218] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:01,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:01,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-08 05:24:01,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682148846] [2025-03-08 05:24:01,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:01,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:01,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:01,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:01,637 INFO L87 Difference]: Start difference. First operand 687 states and 1109 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:24:01,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:01,932 INFO L93 Difference]: Finished difference Result 734 states and 1179 transitions. [2025-03-08 05:24:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:01,932 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 149 [2025-03-08 05:24:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:01,937 INFO L225 Difference]: With dead ends: 734 [2025-03-08 05:24:01,937 INFO L226 Difference]: Without dead ends: 719 [2025-03-08 05:24:01,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:01,939 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 832 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:01,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 2317 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:24:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2025-03-08 05:24:01,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 689. [2025-03-08 05:24:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 553 states have (on average 1.6383363471971066) internal successors, (906), 576 states have internal predecessors, (906), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-08 05:24:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1111 transitions. [2025-03-08 05:24:01,958 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1111 transitions. Word has length 149 [2025-03-08 05:24:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:01,958 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1111 transitions. [2025-03-08 05:24:01,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-08 05:24:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1111 transitions. [2025-03-08 05:24:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-08 05:24:01,961 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:01,961 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:01,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:02,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:02,161 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:02,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 950894940, now seen corresponding path program 1 times [2025-03-08 05:24:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986389923] [2025-03-08 05:24:02,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:02,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:02,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 05:24:02,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 05:24:02,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:02,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:02,220 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986389923] [2025-03-08 05:24:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986389923] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261895392] [2025-03-08 05:24:02,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:02,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:02,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:02,222 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:02,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-08 05:24:02,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-08 05:24:02,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-08 05:24:02,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:02,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:02,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:24:02,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:02,493 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261895392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:02,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-08 05:24:02,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356059726] [2025-03-08 05:24:02,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:02,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:02,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:02,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:02,496 INFO L87 Difference]: Start difference. First operand 689 states and 1111 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 05:24:02,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:02,515 INFO L93 Difference]: Finished difference Result 704 states and 1129 transitions. [2025-03-08 05:24:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:02,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 155 [2025-03-08 05:24:02,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:02,520 INFO L225 Difference]: With dead ends: 704 [2025-03-08 05:24:02,520 INFO L226 Difference]: Without dead ends: 689 [2025-03-08 05:24:02,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:02,522 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 0 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3620 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:02,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3620 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2025-03-08 05:24:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2025-03-08 05:24:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 553 states have (on average 1.6365280289330921) internal successors, (905), 576 states have internal predecessors, (905), 101 states have call successors, (101), 31 states have call predecessors, (101), 34 states have return successors, (104), 94 states have call predecessors, (104), 96 states have call successors, (104) [2025-03-08 05:24:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1110 transitions. [2025-03-08 05:24:02,543 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1110 transitions. Word has length 155 [2025-03-08 05:24:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:02,543 INFO L471 AbstractCegarLoop]: Abstraction has 689 states and 1110 transitions. [2025-03-08 05:24:02,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2025-03-08 05:24:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1110 transitions. [2025-03-08 05:24:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-08 05:24:02,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:02,546 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:02,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:02,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:02,747 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:02,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:02,748 INFO L85 PathProgramCache]: Analyzing trace with hash 139878296, now seen corresponding path program 1 times [2025-03-08 05:24:02,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:02,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083127055] [2025-03-08 05:24:02,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:02,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:02,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 05:24:02,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 05:24:02,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:02,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:02,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083127055] [2025-03-08 05:24:02,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083127055] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:02,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519271815] [2025-03-08 05:24:02,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:02,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:02,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:02,848 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:02,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-08 05:24:02,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-08 05:24:03,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-08 05:24:03,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:03,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:03,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:24:03,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-08 05:24:03,169 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:03,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519271815] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:03,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:03,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-08 05:24:03,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207839480] [2025-03-08 05:24:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:03,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:03,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:03,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:24:03,171 INFO L87 Difference]: Start difference. First operand 689 states and 1110 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:03,211 INFO L93 Difference]: Finished difference Result 1352 states and 2190 transitions. [2025-03-08 05:24:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:03,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2025-03-08 05:24:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:03,220 INFO L225 Difference]: With dead ends: 1352 [2025-03-08 05:24:03,220 INFO L226 Difference]: Without dead ends: 664 [2025-03-08 05:24:03,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:24:03,222 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 7 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:03,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2693 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2025-03-08 05:24:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2025-03-08 05:24:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 531 states have (on average 1.6327683615819208) internal successors, (867), 552 states have internal predecessors, (867), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 1068 transitions. [2025-03-08 05:24:03,241 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 1068 transitions. Word has length 165 [2025-03-08 05:24:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:03,242 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 1068 transitions. [2025-03-08 05:24:03,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:03,242 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 1068 transitions. [2025-03-08 05:24:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-08 05:24:03,244 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:03,244 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:03,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:03,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:03,448 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:03,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:03,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1977249232, now seen corresponding path program 1 times [2025-03-08 05:24:03,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:03,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754291082] [2025-03-08 05:24:03,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:03,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:03,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 05:24:03,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 05:24:03,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:03,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:03,548 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:24:03,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754291082] [2025-03-08 05:24:03,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754291082] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:03,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617979025] [2025-03-08 05:24:03,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:03,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:03,551 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:03,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-08 05:24:03,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-08 05:24:03,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-08 05:24:03,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:03,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:03,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 05:24:03,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-08 05:24:03,826 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:03,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617979025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:03,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:03,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-08 05:24:03,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572989190] [2025-03-08 05:24:03,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:03,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:03,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:03,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:03,827 INFO L87 Difference]: Start difference. First operand 664 states and 1068 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:03,866 INFO L93 Difference]: Finished difference Result 1282 states and 2083 transitions. [2025-03-08 05:24:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:24:03,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2025-03-08 05:24:03,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:03,871 INFO L225 Difference]: With dead ends: 1282 [2025-03-08 05:24:03,871 INFO L226 Difference]: Without dead ends: 682 [2025-03-08 05:24:03,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:03,873 INFO L435 NwaCegarLoop]: 892 mSDtfsCounter, 7 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:03,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2663 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:03,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-03-08 05:24:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2025-03-08 05:24:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 549 states have (on average 1.615664845173042) internal successors, (887), 570 states have internal predecessors, (887), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1088 transitions. [2025-03-08 05:24:03,889 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1088 transitions. Word has length 166 [2025-03-08 05:24:03,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:03,889 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 1088 transitions. [2025-03-08 05:24:03,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:03,889 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1088 transitions. [2025-03-08 05:24:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-08 05:24:03,891 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:03,891 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:03,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:04,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:04,091 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:04,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2044088529, now seen corresponding path program 1 times [2025-03-08 05:24:04,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:04,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389774267] [2025-03-08 05:24:04,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:04,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:24:04,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:24:04,108 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:04,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:24:04,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389774267] [2025-03-08 05:24:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389774267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24554133] [2025-03-08 05:24:04,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:04,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:04,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:04,199 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:04,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-08 05:24:04,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-08 05:24:04,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-08 05:24:04,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:04,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:04,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 05:24:04,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:04,510 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:04,510 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:04,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24554133] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:04,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:04,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-08 05:24:04,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002495981] [2025-03-08 05:24:04,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:04,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:04,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:04,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:04,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:04,516 INFO L87 Difference]: Start difference. First operand 682 states and 1088 transitions. Second operand has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:04,572 INFO L93 Difference]: Finished difference Result 1333 states and 2140 transitions. [2025-03-08 05:24:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:24:04,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 167 [2025-03-08 05:24:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:04,577 INFO L225 Difference]: With dead ends: 1333 [2025-03-08 05:24:04,578 INFO L226 Difference]: Without dead ends: 682 [2025-03-08 05:24:04,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:04,580 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 119 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:04,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5382 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-03-08 05:24:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 661. [2025-03-08 05:24:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 528 states have (on average 1.615530303030303) internal successors, (853), 549 states have internal predecessors, (853), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1054 transitions. [2025-03-08 05:24:04,602 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1054 transitions. Word has length 167 [2025-03-08 05:24:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:04,602 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1054 transitions. [2025-03-08 05:24:04,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1054 transitions. [2025-03-08 05:24:04,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-08 05:24:04,605 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:04,605 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:04,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:04,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-08 05:24:04,805 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:04,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:04,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1676136707, now seen corresponding path program 1 times [2025-03-08 05:24:04,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:04,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925466890] [2025-03-08 05:24:04,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:04,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:04,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 05:24:04,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 05:24:04,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:04,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:04,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925466890] [2025-03-08 05:24:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925466890] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209029340] [2025-03-08 05:24:04,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:04,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:04,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:04,905 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:04,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-08 05:24:05,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-08 05:24:05,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-08 05:24:05,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:05,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:05,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 1939 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:05,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:24:05,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209029340] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:05,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:05,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-08 05:24:05,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032982349] [2025-03-08 05:24:05,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:05,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:05,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:05,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:05,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:05,199 INFO L87 Difference]: Start difference. First operand 661 states and 1054 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:05,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:05,274 INFO L93 Difference]: Finished difference Result 1315 states and 2110 transitions. [2025-03-08 05:24:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:05,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 169 [2025-03-08 05:24:05,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:05,280 INFO L225 Difference]: With dead ends: 1315 [2025-03-08 05:24:05,280 INFO L226 Difference]: Without dead ends: 685 [2025-03-08 05:24:05,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:24:05,282 INFO L435 NwaCegarLoop]: 883 mSDtfsCounter, 128 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:05,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2572 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2025-03-08 05:24:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 661. [2025-03-08 05:24:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 528 states have (on average 1.6136363636363635) internal successors, (852), 549 states have internal predecessors, (852), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (101), 93 states have call predecessors, (101), 95 states have call successors, (101) [2025-03-08 05:24:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1053 transitions. [2025-03-08 05:24:05,297 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1053 transitions. Word has length 169 [2025-03-08 05:24:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:05,297 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1053 transitions. [2025-03-08 05:24:05,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1053 transitions. [2025-03-08 05:24:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-08 05:24:05,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:05,299 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:05,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:05,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-08 05:24:05,501 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:05,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash -18279561, now seen corresponding path program 1 times [2025-03-08 05:24:05,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:05,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341080141] [2025-03-08 05:24:05,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:05,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:05,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-08 05:24:05,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-08 05:24:05,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:05,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:05,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:05,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341080141] [2025-03-08 05:24:05,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341080141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:05,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:05,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 05:24:05,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347387115] [2025-03-08 05:24:05,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:05,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:05,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:05,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:05,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 05:24:05,573 INFO L87 Difference]: Start difference. First operand 661 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:05,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:05,606 INFO L93 Difference]: Finished difference Result 1250 states and 2019 transitions. [2025-03-08 05:24:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:05,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 170 [2025-03-08 05:24:05,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:05,610 INFO L225 Difference]: With dead ends: 1250 [2025-03-08 05:24:05,611 INFO L226 Difference]: Without dead ends: 621 [2025-03-08 05:24:05,613 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 [2025-03-08 05:24:05,613 INFO L435 NwaCegarLoop]: 898 mSDtfsCounter, 8 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:05,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2690 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2025-03-08 05:24:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2025-03-08 05:24:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 491 states have (on average 1.6069246435845215) internal successors, (789), 510 states have internal predecessors, (789), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-08 05:24:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 986 transitions. [2025-03-08 05:24:05,630 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 986 transitions. Word has length 170 [2025-03-08 05:24:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:05,630 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 986 transitions. [2025-03-08 05:24:05,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-08 05:24:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 986 transitions. [2025-03-08 05:24:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-08 05:24:05,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:05,632 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:05,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-08 05:24:05,633 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:05,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash 588143880, now seen corresponding path program 1 times [2025-03-08 05:24:05,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:05,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393802381] [2025-03-08 05:24:05,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:05,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-08 05:24:05,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-08 05:24:05,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:05,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-08 05:24:05,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:05,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393802381] [2025-03-08 05:24:05,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393802381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:05,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:05,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:24:05,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636214866] [2025-03-08 05:24:05,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:05,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:05,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:05,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:05,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:05,748 INFO L87 Difference]: Start difference. First operand 621 states and 986 transitions. Second operand has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:05,801 INFO L93 Difference]: Finished difference Result 1153 states and 1858 transitions. [2025-03-08 05:24:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:24:05,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 171 [2025-03-08 05:24:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:05,805 INFO L225 Difference]: With dead ends: 1153 [2025-03-08 05:24:05,805 INFO L226 Difference]: Without dead ends: 607 [2025-03-08 05:24:05,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:05,806 INFO L435 NwaCegarLoop]: 881 mSDtfsCounter, 88 mSDsluCounter, 4327 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:05,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5208 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2025-03-08 05:24:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2025-03-08 05:24:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 477 states have (on average 1.60167714884696) internal successors, (764), 496 states have internal predecessors, (764), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-08 05:24:05,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 961 transitions. [2025-03-08 05:24:05,820 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 961 transitions. Word has length 171 [2025-03-08 05:24:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:05,820 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 961 transitions. [2025-03-08 05:24:05,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:05,820 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 961 transitions. [2025-03-08 05:24:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-08 05:24:05,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:05,822 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:05,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-08 05:24:05,822 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:05,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash -886079628, now seen corresponding path program 1 times [2025-03-08 05:24:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:05,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033973063] [2025-03-08 05:24:05,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:05,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-08 05:24:05,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-08 05:24:05,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:05,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 05:24:06,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:06,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033973063] [2025-03-08 05:24:06,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033973063] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:06,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:06,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 05:24:06,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813437960] [2025-03-08 05:24:06,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:06,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 05:24:06,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:06,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 05:24:06,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:06,095 INFO L87 Difference]: Start difference. First operand 607 states and 961 transitions. Second operand has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:06,221 INFO L93 Difference]: Finished difference Result 1180 states and 1886 transitions. [2025-03-08 05:24:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:24:06,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 172 [2025-03-08 05:24:06,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:06,226 INFO L225 Difference]: With dead ends: 1180 [2025-03-08 05:24:06,226 INFO L226 Difference]: Without dead ends: 598 [2025-03-08 05:24:06,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:06,232 INFO L435 NwaCegarLoop]: 841 mSDtfsCounter, 45 mSDsluCounter, 6681 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7522 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:06,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7522 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-03-08 05:24:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2025-03-08 05:24:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 468 states have (on average 1.6004273504273505) internal successors, (749), 487 states have internal predecessors, (749), 99 states have call successors, (99), 31 states have call predecessors, (99), 30 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2025-03-08 05:24:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 946 transitions. [2025-03-08 05:24:06,245 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 946 transitions. Word has length 172 [2025-03-08 05:24:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:06,246 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 946 transitions. [2025-03-08 05:24:06,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2025-03-08 05:24:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 946 transitions. [2025-03-08 05:24:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-08 05:24:06,247 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:06,247 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:06,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-08 05:24:06,248 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:06,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:06,248 INFO L85 PathProgramCache]: Analyzing trace with hash 662925996, now seen corresponding path program 1 times [2025-03-08 05:24:06,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:06,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361620222] [2025-03-08 05:24:06,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:06,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 05:24:06,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 05:24:06,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:06,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-08 05:24:06,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361620222] [2025-03-08 05:24:06,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361620222] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:06,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051626425] [2025-03-08 05:24:06,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:06,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:06,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:06,513 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:06,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-08 05:24:06,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-08 05:24:06,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-08 05:24:06,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:06,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:06,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 05:24:06,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-08 05:24:06,914 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:06,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051626425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:06,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:06,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-03-08 05:24:06,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651682776] [2025-03-08 05:24:06,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:06,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:24:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:06,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:24:06,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-03-08 05:24:06,915 INFO L87 Difference]: Start difference. First operand 598 states and 946 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-08 05:24:09,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:09,263 INFO L93 Difference]: Finished difference Result 1943 states and 3185 transitions. [2025-03-08 05:24:09,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 05:24:09,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 173 [2025-03-08 05:24:09,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:09,271 INFO L225 Difference]: With dead ends: 1943 [2025-03-08 05:24:09,271 INFO L226 Difference]: Without dead ends: 1437 [2025-03-08 05:24:09,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-03-08 05:24:09,273 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 2334 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 4737 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 5256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 4737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:09,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 2753 Invalid, 5256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 4737 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-08 05:24:09,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2025-03-08 05:24:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1324. [2025-03-08 05:24:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 1037 states have (on average 1.6403085824493733) internal successors, (1701), 1076 states have internal predecessors, (1701), 217 states have call successors, (217), 64 states have call predecessors, (217), 69 states have return successors, (236), 209 states have call predecessors, (236), 212 states have call successors, (236) [2025-03-08 05:24:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2154 transitions. [2025-03-08 05:24:09,308 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2154 transitions. Word has length 173 [2025-03-08 05:24:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:09,309 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2154 transitions. [2025-03-08 05:24:09,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2025-03-08 05:24:09,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2154 transitions. [2025-03-08 05:24:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-08 05:24:09,310 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:09,311 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:09,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-08 05:24:09,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:09,511 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:09,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:09,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1067978490, now seen corresponding path program 1 times [2025-03-08 05:24:09,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:09,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479143807] [2025-03-08 05:24:09,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:09,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:09,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 05:24:09,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 05:24:09,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:09,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:09,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:09,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479143807] [2025-03-08 05:24:09,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479143807] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:09,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78106796] [2025-03-08 05:24:09,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:09,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:09,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:09,743 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:09,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-08 05:24:09,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-08 05:24:10,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-08 05:24:10,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:10,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:10,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 1940 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-08 05:24:10,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:24:10,139 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:10,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78106796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:10,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:10,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-08 05:24:10,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673397491] [2025-03-08 05:24:10,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:10,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:10,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:10,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:24:10,140 INFO L87 Difference]: Start difference. First operand 1324 states and 2154 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-08 05:24:11,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:11,641 INFO L93 Difference]: Finished difference Result 2813 states and 4623 transitions. [2025-03-08 05:24:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 05:24:11,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 175 [2025-03-08 05:24:11,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:11,650 INFO L225 Difference]: With dead ends: 2813 [2025-03-08 05:24:11,650 INFO L226 Difference]: Without dead ends: 1581 [2025-03-08 05:24:11,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-08 05:24:11,654 INFO L435 NwaCegarLoop]: 483 mSDtfsCounter, 2084 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 3388 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 3388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:11,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 2026 Invalid, 3869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 3388 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-08 05:24:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2025-03-08 05:24:11,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1395. [2025-03-08 05:24:11,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1089 states have (on average 1.628099173553719) internal successors, (1773), 1134 states have internal predecessors, (1773), 225 states have call successors, (225), 69 states have call predecessors, (225), 80 states have return successors, (262), 217 states have call predecessors, (262), 220 states have call successors, (262) [2025-03-08 05:24:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2260 transitions. [2025-03-08 05:24:11,692 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2260 transitions. Word has length 175 [2025-03-08 05:24:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:11,693 INFO L471 AbstractCegarLoop]: Abstraction has 1395 states and 2260 transitions. [2025-03-08 05:24:11,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2025-03-08 05:24:11,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2260 transitions. [2025-03-08 05:24:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 05:24:11,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:11,695 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:11,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-08 05:24:11,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:11,895 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:11,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:11,896 INFO L85 PathProgramCache]: Analyzing trace with hash -715691692, now seen corresponding path program 1 times [2025-03-08 05:24:11,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:11,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145923489] [2025-03-08 05:24:11,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:11,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:11,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:11,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:11,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:11,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:12,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145923489] [2025-03-08 05:24:12,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145923489] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255240495] [2025-03-08 05:24:12,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:12,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:12,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:12,199 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:12,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-08 05:24:12,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:12,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:12,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:12,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:12,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-08 05:24:12,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-08 05:24:12,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:12,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255240495] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:12,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-08 05:24:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859921082] [2025-03-08 05:24:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:12,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:24:12,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:12,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:24:12,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:12,509 INFO L87 Difference]: Start difference. First operand 1395 states and 2260 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 05:24:12,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:12,577 INFO L93 Difference]: Finished difference Result 3387 states and 5583 transitions. [2025-03-08 05:24:12,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:24:12,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 180 [2025-03-08 05:24:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:12,592 INFO L225 Difference]: With dead ends: 3387 [2025-03-08 05:24:12,593 INFO L226 Difference]: Without dead ends: 2087 [2025-03-08 05:24:12,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:12,599 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 775 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:12,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 2370 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2025-03-08 05:24:12,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1391. [2025-03-08 05:24:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1087 states have (on average 1.6274149034038639) internal successors, (1769), 1130 states have internal predecessors, (1769), 225 states have call successors, (225), 69 states have call predecessors, (225), 78 states have return successors, (253), 217 states have call predecessors, (253), 220 states have call successors, (253) [2025-03-08 05:24:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 2247 transitions. [2025-03-08 05:24:12,651 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 2247 transitions. Word has length 180 [2025-03-08 05:24:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:12,651 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 2247 transitions. [2025-03-08 05:24:12,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-08 05:24:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 2247 transitions. [2025-03-08 05:24:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 05:24:12,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:12,654 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:12,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:12,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:12,854 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:12,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:12,855 INFO L85 PathProgramCache]: Analyzing trace with hash -591618445, now seen corresponding path program 1 times [2025-03-08 05:24:12,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:12,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907710697] [2025-03-08 05:24:12,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:12,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:12,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:12,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:12,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:12,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:13,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907710697] [2025-03-08 05:24:13,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907710697] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:13,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170665683] [2025-03-08 05:24:13,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:13,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:13,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:13,117 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:13,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-08 05:24:13,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:13,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:13,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:13,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:13,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 1956 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-08 05:24:13,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:24:13,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170665683] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:13,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:13,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-08 05:24:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46847405] [2025-03-08 05:24:13,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:13,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:13,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:13,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:13,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:24:13,529 INFO L87 Difference]: Start difference. First operand 1391 states and 2247 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:14,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:14,607 INFO L93 Difference]: Finished difference Result 4053 states and 6639 transitions. [2025-03-08 05:24:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2025-03-08 05:24:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:14,618 INFO L225 Difference]: With dead ends: 4053 [2025-03-08 05:24:14,619 INFO L226 Difference]: Without dead ends: 2754 [2025-03-08 05:24:14,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:14,624 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 1891 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:14,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1975 Valid, 551 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 05:24:14,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2025-03-08 05:24:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2752. [2025-03-08 05:24:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2146 states have (on average 1.6328052190121156) internal successors, (3504), 2231 states have internal predecessors, (3504), 448 states have call successors, (448), 131 states have call predecessors, (448), 157 states have return successors, (530), 441 states have call predecessors, (530), 443 states have call successors, (530) [2025-03-08 05:24:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4482 transitions. [2025-03-08 05:24:14,715 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4482 transitions. Word has length 180 [2025-03-08 05:24:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:14,716 INFO L471 AbstractCegarLoop]: Abstraction has 2752 states and 4482 transitions. [2025-03-08 05:24:14,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4482 transitions. [2025-03-08 05:24:14,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2025-03-08 05:24:14,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:14,720 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:14,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-08 05:24:14,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-08 05:24:14,921 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:14,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:14,922 INFO L85 PathProgramCache]: Analyzing trace with hash 508215028, now seen corresponding path program 1 times [2025-03-08 05:24:14,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:14,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561793503] [2025-03-08 05:24:14,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:14,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:14,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 180 statements into 1 equivalence classes. [2025-03-08 05:24:14,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 180 of 180 statements. [2025-03-08 05:24:14,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:14,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-08 05:24:15,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561793503] [2025-03-08 05:24:15,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561793503] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:15,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:15,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 05:24:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805689149] [2025-03-08 05:24:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:15,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 05:24:15,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:15,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 05:24:15,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:15,114 INFO L87 Difference]: Start difference. First operand 2752 states and 4482 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:15,222 INFO L93 Difference]: Finished difference Result 4035 states and 6586 transitions. [2025-03-08 05:24:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:24:15,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2025-03-08 05:24:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:15,228 INFO L225 Difference]: With dead ends: 4035 [2025-03-08 05:24:15,228 INFO L226 Difference]: Without dead ends: 1369 [2025-03-08 05:24:15,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:15,233 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 31 mSDsluCounter, 6688 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7530 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:15,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7530 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2025-03-08 05:24:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1369. [2025-03-08 05:24:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1071 states have (on average 1.6255835667600373) internal successors, (1741), 1113 states have internal predecessors, (1741), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2025-03-08 05:24:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2208 transitions. [2025-03-08 05:24:15,286 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2208 transitions. Word has length 180 [2025-03-08 05:24:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:15,286 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2208 transitions. [2025-03-08 05:24:15,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-08 05:24:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2208 transitions. [2025-03-08 05:24:15,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-08 05:24:15,288 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:15,288 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:15,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-08 05:24:15,289 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:15,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1160488935, now seen corresponding path program 1 times [2025-03-08 05:24:15,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:15,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199010696] [2025-03-08 05:24:15,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:15,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 05:24:15,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 05:24:15,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:15,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-08 05:24:15,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199010696] [2025-03-08 05:24:15,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199010696] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:15,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697435485] [2025-03-08 05:24:15,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:15,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:15,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:15,615 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:15,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-08 05:24:15,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-08 05:24:15,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-08 05:24:15,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:15,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:15,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 05:24:15,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-03-08 05:24:15,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:24:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:24:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697435485] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:16,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 05:24:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 6] total 15 [2025-03-08 05:24:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568927578] [2025-03-08 05:24:16,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:16,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:24:16,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:16,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:24:16,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:24:16,074 INFO L87 Difference]: Start difference. First operand 1369 states and 2208 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 05:24:16,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:16,123 INFO L93 Difference]: Finished difference Result 1389 states and 2232 transitions. [2025-03-08 05:24:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:16,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 181 [2025-03-08 05:24:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:16,133 INFO L225 Difference]: With dead ends: 1389 [2025-03-08 05:24:16,133 INFO L226 Difference]: Without dead ends: 1375 [2025-03-08 05:24:16,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2025-03-08 05:24:16,134 INFO L435 NwaCegarLoop]: 855 mSDtfsCounter, 0 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:16,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3405 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:16,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2025-03-08 05:24:16,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1375. [2025-03-08 05:24:16,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1077 states have (on average 1.6220984215413186) internal successors, (1747), 1119 states have internal predecessors, (1747), 219 states have call successors, (219), 69 states have call predecessors, (219), 78 states have return successors, (248), 212 states have call predecessors, (248), 215 states have call successors, (248) [2025-03-08 05:24:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2214 transitions. [2025-03-08 05:24:16,177 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2214 transitions. Word has length 181 [2025-03-08 05:24:16,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:16,178 INFO L471 AbstractCegarLoop]: Abstraction has 1375 states and 2214 transitions. [2025-03-08 05:24:16,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2025-03-08 05:24:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2214 transitions. [2025-03-08 05:24:16,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2025-03-08 05:24:16,181 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:16,181 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:16,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:16,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:16,382 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:16,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -193594796, now seen corresponding path program 1 times [2025-03-08 05:24:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209745132] [2025-03-08 05:24:16,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:16,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-03-08 05:24:16,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-03-08 05:24:16,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:16,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2025-03-08 05:24:16,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209745132] [2025-03-08 05:24:16,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209745132] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382553184] [2025-03-08 05:24:16,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:16,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:16,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:16,719 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:16,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-08 05:24:16,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-03-08 05:24:17,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-03-08 05:24:17,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:17,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:17,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:17,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 32 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-08 05:24:17,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:24:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-03-08 05:24:17,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382553184] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:24:17,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:24:17,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2025-03-08 05:24:17,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808647637] [2025-03-08 05:24:17,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:24:17,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 05:24:17,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:17,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 05:24:17,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-03-08 05:24:17,408 INFO L87 Difference]: Start difference. First operand 1375 states and 2214 transitions. Second operand has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 12 states have internal predecessors, (265), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2025-03-08 05:24:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:23,934 INFO L93 Difference]: Finished difference Result 10192 states and 17105 transitions. [2025-03-08 05:24:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-03-08 05:24:23,935 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 12 states have internal predecessors, (265), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) Word has length 270 [2025-03-08 05:24:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:23,983 INFO L225 Difference]: With dead ends: 10192 [2025-03-08 05:24:23,983 INFO L226 Difference]: Without dead ends: 8903 [2025-03-08 05:24:23,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 558 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=653, Invalid=4177, Unknown=0, NotChecked=0, Total=4830 [2025-03-08 05:24:23,998 INFO L435 NwaCegarLoop]: 819 mSDtfsCounter, 6288 mSDsluCounter, 6570 mSDsCounter, 0 mSdLazyCounter, 15137 mSolverCounterSat, 2021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6370 SdHoareTripleChecker+Valid, 7389 SdHoareTripleChecker+Invalid, 17158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2021 IncrementalHoareTripleChecker+Valid, 15137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:23,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6370 Valid, 7389 Invalid, 17158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2021 Valid, 15137 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2025-03-08 05:24:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2025-03-08 05:24:24,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 7755. [2025-03-08 05:24:24,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7755 states, 5963 states have (on average 1.6030521549555592) internal successors, (9559), 6215 states have internal predecessors, (9559), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 487 states have return successors, (1922), 1301 states have call predecessors, (1922), 1300 states have call successors, (1922) [2025-03-08 05:24:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7755 states to 7755 states and 12785 transitions. [2025-03-08 05:24:24,388 INFO L78 Accepts]: Start accepts. Automaton has 7755 states and 12785 transitions. Word has length 270 [2025-03-08 05:24:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:24,388 INFO L471 AbstractCegarLoop]: Abstraction has 7755 states and 12785 transitions. [2025-03-08 05:24:24,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.928571428571427) internal successors, (265), 12 states have internal predecessors, (265), 9 states have call successors, (59), 6 states have call predecessors, (59), 8 states have return successors, (58), 11 states have call predecessors, (58), 8 states have call successors, (58) [2025-03-08 05:24:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 7755 states and 12785 transitions. [2025-03-08 05:24:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2025-03-08 05:24:24,443 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:24,443 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:24,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:24,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:24,643 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:24,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash -680421634, now seen corresponding path program 1 times [2025-03-08 05:24:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853650930] [2025-03-08 05:24:24,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:24,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 272 statements into 1 equivalence classes. [2025-03-08 05:24:24,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 272 of 272 statements. [2025-03-08 05:24:24,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:24,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-03-08 05:24:24,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853650930] [2025-03-08 05:24:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853650930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:24,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:24,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 05:24:24,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315055849] [2025-03-08 05:24:24,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:24,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:24:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:24,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:24:24,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:24,823 INFO L87 Difference]: Start difference. First operand 7755 states and 12785 transitions. Second operand has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 05:24:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:25,180 INFO L93 Difference]: Finished difference Result 15433 states and 25478 transitions. [2025-03-08 05:24:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:24:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 272 [2025-03-08 05:24:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:25,214 INFO L225 Difference]: With dead ends: 15433 [2025-03-08 05:24:25,214 INFO L226 Difference]: Without dead ends: 7746 [2025-03-08 05:24:25,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:25,236 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 41 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 5849 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:25,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 5849 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:25,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7746 states. [2025-03-08 05:24:25,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7746 to 7746. [2025-03-08 05:24:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 5956 states have (on average 1.6025856279382136) internal successors, (9545), 6207 states have internal predecessors, (9545), 1304 states have call successors, (1304), 330 states have call predecessors, (1304), 485 states have return successors, (1918), 1300 states have call predecessors, (1918), 1300 states have call successors, (1918) [2025-03-08 05:24:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 12767 transitions. [2025-03-08 05:24:25,673 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 12767 transitions. Word has length 272 [2025-03-08 05:24:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:25,674 INFO L471 AbstractCegarLoop]: Abstraction has 7746 states and 12767 transitions. [2025-03-08 05:24:25,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2025-03-08 05:24:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 12767 transitions. [2025-03-08 05:24:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2025-03-08 05:24:25,695 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:25,696 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2025-03-08 05:24:25,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-08 05:24:25,700 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:25,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1954095688, now seen corresponding path program 1 times [2025-03-08 05:24:25,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:25,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845503457] [2025-03-08 05:24:25,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:25,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:25,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-08 05:24:25,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-08 05:24:25,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:25,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-03-08 05:24:25,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:25,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845503457] [2025-03-08 05:24:25,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845503457] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:25,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494884995] [2025-03-08 05:24:25,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:25,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:25,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:25,896 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:25,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-08 05:24:26,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 273 statements into 1 equivalence classes. [2025-03-08 05:24:26,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 273 of 273 statements. [2025-03-08 05:24:26,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:26,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:26,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 05:24:26,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-03-08 05:24:26,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:26,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494884995] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:26,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:26,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-03-08 05:24:26,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446733533] [2025-03-08 05:24:26,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:26,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:26,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:26,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:26,292 INFO L87 Difference]: Start difference. First operand 7746 states and 12767 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 05:24:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:26,426 INFO L93 Difference]: Finished difference Result 10149 states and 16683 transitions. [2025-03-08 05:24:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 05:24:26,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 273 [2025-03-08 05:24:26,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:26,439 INFO L225 Difference]: With dead ends: 10149 [2025-03-08 05:24:26,439 INFO L226 Difference]: Without dead ends: 2443 [2025-03-08 05:24:26,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:24:26,458 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 1 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:26,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2505 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2025-03-08 05:24:26,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2443. [2025-03-08 05:24:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2443 states, 1906 states have (on average 1.602308499475341) internal successors, (3054), 1984 states have internal predecessors, (3054), 381 states have call successors, (381), 114 states have call predecessors, (381), 155 states have return successors, (523), 368 states have call predecessors, (523), 377 states have call successors, (523) [2025-03-08 05:24:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3958 transitions. [2025-03-08 05:24:26,622 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3958 transitions. Word has length 273 [2025-03-08 05:24:26,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:26,623 INFO L471 AbstractCegarLoop]: Abstraction has 2443 states and 3958 transitions. [2025-03-08 05:24:26,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 05:24:26,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3958 transitions. [2025-03-08 05:24:26,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2025-03-08 05:24:26,634 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:26,635 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:26,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:26,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-08 05:24:26,836 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:26,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1567636045, now seen corresponding path program 1 times [2025-03-08 05:24:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370086064] [2025-03-08 05:24:26,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:26,858 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-08 05:24:26,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-08 05:24:26,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:26,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2025-03-08 05:24:27,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370086064] [2025-03-08 05:24:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370086064] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967986661] [2025-03-08 05:24:27,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:27,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:27,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:27,133 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:27,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-08 05:24:27,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 276 statements into 1 equivalence classes. [2025-03-08 05:24:27,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 276 of 276 statements. [2025-03-08 05:24:27,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:27,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:27,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 05:24:27,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-03-08 05:24:27,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967986661] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:27,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:27,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-08 05:24:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298262848] [2025-03-08 05:24:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:27,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:24:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:27,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:24:27,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:27,482 INFO L87 Difference]: Start difference. First operand 2443 states and 3958 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 05:24:27,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:27,557 INFO L93 Difference]: Finished difference Result 4822 states and 7861 transitions. [2025-03-08 05:24:27,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:27,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 276 [2025-03-08 05:24:27,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:27,568 INFO L225 Difference]: With dead ends: 4822 [2025-03-08 05:24:27,568 INFO L226 Difference]: Without dead ends: 2463 [2025-03-08 05:24:27,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:24:27,573 INFO L435 NwaCegarLoop]: 844 mSDtfsCounter, 0 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:27,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4213 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2025-03-08 05:24:27,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 2457. [2025-03-08 05:24:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1916 states have (on average 1.5991649269311066) internal successors, (3064), 1996 states have internal predecessors, (3064), 381 states have call successors, (381), 114 states have call predecessors, (381), 159 states have return successors, (527), 370 states have call predecessors, (527), 377 states have call successors, (527) [2025-03-08 05:24:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3972 transitions. [2025-03-08 05:24:27,694 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3972 transitions. Word has length 276 [2025-03-08 05:24:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:27,695 INFO L471 AbstractCegarLoop]: Abstraction has 2457 states and 3972 transitions. [2025-03-08 05:24:27,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 05:24:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3972 transitions. [2025-03-08 05:24:27,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2025-03-08 05:24:27,698 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:27,698 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:27,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:27,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-08 05:24:27,898 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:27,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash -182454863, now seen corresponding path program 1 times [2025-03-08 05:24:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:27,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812743370] [2025-03-08 05:24:27,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:27,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:27,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 282 statements into 1 equivalence classes. [2025-03-08 05:24:27,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 282 of 282 statements. [2025-03-08 05:24:27,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:27,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2025-03-08 05:24:28,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812743370] [2025-03-08 05:24:28,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812743370] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:28,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729304429] [2025-03-08 05:24:28,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:28,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:28,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:28,015 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:28,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-08 05:24:28,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 282 statements into 1 equivalence classes. [2025-03-08 05:24:28,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 282 of 282 statements. [2025-03-08 05:24:28,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:28,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:28,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 05:24:28,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2025-03-08 05:24:28,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:24:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 24 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2025-03-08 05:24:29,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729304429] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:24:29,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:24:29,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 11] total 18 [2025-03-08 05:24:29,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946091997] [2025-03-08 05:24:29,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:24:29,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 05:24:29,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:29,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 05:24:29,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2025-03-08 05:24:29,161 INFO L87 Difference]: Start difference. First operand 2457 states and 3972 transitions. Second operand has 18 states, 18 states have (on average 16.27777777777778) internal successors, (293), 18 states have internal predecessors, (293), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2025-03-08 05:24:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:36,312 INFO L93 Difference]: Finished difference Result 12457 states and 20383 transitions. [2025-03-08 05:24:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2025-03-08 05:24:36,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.27777777777778) internal successors, (293), 18 states have internal predecessors, (293), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) Word has length 282 [2025-03-08 05:24:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:36,344 INFO L225 Difference]: With dead ends: 12457 [2025-03-08 05:24:36,344 INFO L226 Difference]: Without dead ends: 9541 [2025-03-08 05:24:36,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 603 SyntacticMatches, 4 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6395 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2332, Invalid=14180, Unknown=0, NotChecked=0, Total=16512 [2025-03-08 05:24:36,362 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 13971 mSDsluCounter, 5941 mSDsCounter, 0 mSdLazyCounter, 10911 mSolverCounterSat, 4593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14007 SdHoareTripleChecker+Valid, 6781 SdHoareTripleChecker+Invalid, 15504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4593 IncrementalHoareTripleChecker+Valid, 10911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:36,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14007 Valid, 6781 Invalid, 15504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4593 Valid, 10911 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2025-03-08 05:24:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9541 states. [2025-03-08 05:24:36,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9541 to 9080. [2025-03-08 05:24:36,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9080 states, 6877 states have (on average 1.5516940526392322) internal successors, (10671), 7223 states have internal predecessors, (10671), 1599 states have call successors, (1599), 468 states have call predecessors, (1599), 603 states have return successors, (2169), 1580 states have call predecessors, (2169), 1595 states have call successors, (2169) [2025-03-08 05:24:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 14439 transitions. [2025-03-08 05:24:36,790 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 14439 transitions. Word has length 282 [2025-03-08 05:24:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:36,790 INFO L471 AbstractCegarLoop]: Abstraction has 9080 states and 14439 transitions. [2025-03-08 05:24:36,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.27777777777778) internal successors, (293), 18 states have internal predecessors, (293), 12 states have call successors, (62), 7 states have call predecessors, (62), 10 states have return successors, (63), 14 states have call predecessors, (63), 11 states have call successors, (63) [2025-03-08 05:24:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 14439 transitions. [2025-03-08 05:24:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2025-03-08 05:24:36,793 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:36,793 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:36,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-08 05:24:36,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-08 05:24:36,994 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:36,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash -261137586, now seen corresponding path program 1 times [2025-03-08 05:24:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:36,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013326612] [2025-03-08 05:24:36,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:37,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 233 statements into 1 equivalence classes. [2025-03-08 05:24:37,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 233 of 233 statements. [2025-03-08 05:24:37,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:37,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2025-03-08 05:24:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013326612] [2025-03-08 05:24:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013326612] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954253709] [2025-03-08 05:24:37,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:37,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:37,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:37,309 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:37,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-08 05:24:37,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 233 statements into 1 equivalence classes. [2025-03-08 05:24:37,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 233 of 233 statements. [2025-03-08 05:24:37,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:37,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:37,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 2099 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 05:24:37,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 92 proven. 9 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2025-03-08 05:24:37,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:24:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2025-03-08 05:24:38,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954253709] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:24:38,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:24:38,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2025-03-08 05:24:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501847220] [2025-03-08 05:24:38,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:24:38,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 05:24:38,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:38,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 05:24:38,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2025-03-08 05:24:38,330 INFO L87 Difference]: Start difference. First operand 9080 states and 14439 transitions. Second operand has 23 states, 23 states have (on average 13.434782608695652) internal successors, (309), 19 states have internal predecessors, (309), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2025-03-08 05:24:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:44,112 INFO L93 Difference]: Finished difference Result 29413 states and 47442 transitions. [2025-03-08 05:24:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 05:24:44,113 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.434782608695652) internal successors, (309), 19 states have internal predecessors, (309), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) Word has length 233 [2025-03-08 05:24:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:44,173 INFO L225 Difference]: With dead ends: 29413 [2025-03-08 05:24:44,173 INFO L226 Difference]: Without dead ends: 20420 [2025-03-08 05:24:44,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 467 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1653, Unknown=0, NotChecked=0, Total=1980 [2025-03-08 05:24:44,199 INFO L435 NwaCegarLoop]: 798 mSDtfsCounter, 6388 mSDsluCounter, 7746 mSDsCounter, 0 mSdLazyCounter, 15113 mSolverCounterSat, 1955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6388 SdHoareTripleChecker+Valid, 8544 SdHoareTripleChecker+Invalid, 17068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1955 IncrementalHoareTripleChecker+Valid, 15113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:44,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6388 Valid, 8544 Invalid, 17068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1955 Valid, 15113 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-03-08 05:24:44,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20420 states. [2025-03-08 05:24:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20420 to 19798. [2025-03-08 05:24:45,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19798 states, 14783 states have (on average 1.5470472840424812) internal successors, (22870), 15550 states have internal predecessors, (22870), 3796 states have call successors, (3796), 908 states have call predecessors, (3796), 1218 states have return successors, (5249), 3803 states have call predecessors, (5249), 3792 states have call successors, (5249) [2025-03-08 05:24:45,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19798 states to 19798 states and 31915 transitions. [2025-03-08 05:24:45,360 INFO L78 Accepts]: Start accepts. Automaton has 19798 states and 31915 transitions. Word has length 233 [2025-03-08 05:24:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:45,360 INFO L471 AbstractCegarLoop]: Abstraction has 19798 states and 31915 transitions. [2025-03-08 05:24:45,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.434782608695652) internal successors, (309), 19 states have internal predecessors, (309), 11 states have call successors, (61), 6 states have call predecessors, (61), 14 states have return successors, (62), 15 states have call predecessors, (62), 10 states have call successors, (62) [2025-03-08 05:24:45,361 INFO L276 IsEmpty]: Start isEmpty. Operand 19798 states and 31915 transitions. [2025-03-08 05:24:45,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2025-03-08 05:24:45,368 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:45,368 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:45,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-03-08 05:24:45,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:45,569 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:45,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1774890531, now seen corresponding path program 1 times [2025-03-08 05:24:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:45,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134296562] [2025-03-08 05:24:45,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:45,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:45,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 237 statements into 1 equivalence classes. [2025-03-08 05:24:45,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 237 of 237 statements. [2025-03-08 05:24:45,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:45,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-08 05:24:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134296562] [2025-03-08 05:24:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134296562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:45,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:45,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 05:24:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485310215] [2025-03-08 05:24:45,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:45,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:24:45,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:45,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:24:45,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:45,718 INFO L87 Difference]: Start difference. First operand 19798 states and 31915 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-08 05:24:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:46,828 INFO L93 Difference]: Finished difference Result 39619 states and 64206 transitions. [2025-03-08 05:24:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:24:46,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 237 [2025-03-08 05:24:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:46,916 INFO L225 Difference]: With dead ends: 39619 [2025-03-08 05:24:46,916 INFO L226 Difference]: Without dead ends: 19958 [2025-03-08 05:24:46,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:46,981 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 0 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:46,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4169 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:24:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19958 states. [2025-03-08 05:24:47,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19958 to 19910. [2025-03-08 05:24:47,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19910 states, 14895 states have (on average 1.540785498489426) internal successors, (22950), 15634 states have internal predecessors, (22950), 3768 states have call successors, (3768), 908 states have call predecessors, (3768), 1246 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-08 05:24:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19910 states to 19910 states and 32059 transitions. [2025-03-08 05:24:48,082 INFO L78 Accepts]: Start accepts. Automaton has 19910 states and 32059 transitions. Word has length 237 [2025-03-08 05:24:48,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:48,083 INFO L471 AbstractCegarLoop]: Abstraction has 19910 states and 32059 transitions. [2025-03-08 05:24:48,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2025-03-08 05:24:48,083 INFO L276 IsEmpty]: Start isEmpty. Operand 19910 states and 32059 transitions. [2025-03-08 05:24:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2025-03-08 05:24:48,089 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:48,089 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:48,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-08 05:24:48,089 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:48,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash 78969246, now seen corresponding path program 1 times [2025-03-08 05:24:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599595173] [2025-03-08 05:24:48,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:48,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-03-08 05:24:48,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-03-08 05:24:48,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:48,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-08 05:24:48,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:48,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599595173] [2025-03-08 05:24:48,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599595173] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:48,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255887047] [2025-03-08 05:24:48,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:48,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:48,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:48,350 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:48,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-08 05:24:48,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 312 statements into 1 equivalence classes. [2025-03-08 05:24:48,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 312 of 312 statements. [2025-03-08 05:24:48,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:48,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:48,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:48,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2025-03-08 05:24:48,730 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:48,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255887047] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:48,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:48,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:24:48,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045735283] [2025-03-08 05:24:48,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:48,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:48,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:48,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:48,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:48,731 INFO L87 Difference]: Start difference. First operand 19910 states and 32059 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-08 05:24:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:50,582 INFO L93 Difference]: Finished difference Result 40400 states and 65794 transitions. [2025-03-08 05:24:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:50,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 312 [2025-03-08 05:24:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:50,713 INFO L225 Difference]: With dead ends: 40400 [2025-03-08 05:24:50,713 INFO L226 Difference]: Without dead ends: 20630 [2025-03-08 05:24:50,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:24:50,817 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 144 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:50,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2323 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20630 states. [2025-03-08 05:24:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20630 to 20534. [2025-03-08 05:24:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20534 states, 15503 states have (on average 1.5556988969876797) internal successors, (24118), 16242 states have internal predecessors, (24118), 3768 states have call successors, (3768), 924 states have call predecessors, (3768), 1262 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-08 05:24:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20534 states to 20534 states and 33227 transitions. [2025-03-08 05:24:52,122 INFO L78 Accepts]: Start accepts. Automaton has 20534 states and 33227 transitions. Word has length 312 [2025-03-08 05:24:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:52,123 INFO L471 AbstractCegarLoop]: Abstraction has 20534 states and 33227 transitions. [2025-03-08 05:24:52,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-08 05:24:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 20534 states and 33227 transitions. [2025-03-08 05:24:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2025-03-08 05:24:52,128 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:52,129 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:52,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-03-08 05:24:52,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:52,329 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:52,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:52,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2079152246, now seen corresponding path program 1 times [2025-03-08 05:24:52,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:52,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394303792] [2025-03-08 05:24:52,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:52,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:52,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 244 statements into 1 equivalence classes. [2025-03-08 05:24:52,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 244 of 244 statements. [2025-03-08 05:24:52,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:52,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:52,460 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2025-03-08 05:24:52,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394303792] [2025-03-08 05:24:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394303792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:52,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:24:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 05:24:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567153578] [2025-03-08 05:24:52,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:52,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:24:52,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:52,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:24:52,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:24:52,461 INFO L87 Difference]: Start difference. First operand 20534 states and 33227 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-08 05:24:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:53,624 INFO L93 Difference]: Finished difference Result 42335 states and 69566 transitions. [2025-03-08 05:24:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:24:53,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 244 [2025-03-08 05:24:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:53,734 INFO L225 Difference]: With dead ends: 42335 [2025-03-08 05:24:53,734 INFO L226 Difference]: Without dead ends: 20670 [2025-03-08 05:24:53,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:24:53,804 INFO L435 NwaCegarLoop]: 846 mSDtfsCounter, 260 mSDsluCounter, 4042 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:53,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 4888 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20670 states. [2025-03-08 05:24:54,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20670 to 20534. [2025-03-08 05:24:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20534 states, 15503 states have (on average 1.5425401535186738) internal successors, (23914), 16242 states have internal predecessors, (23914), 3768 states have call successors, (3768), 924 states have call predecessors, (3768), 1262 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-08 05:24:54,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20534 states to 20534 states and 33023 transitions. [2025-03-08 05:24:54,758 INFO L78 Accepts]: Start accepts. Automaton has 20534 states and 33023 transitions. Word has length 244 [2025-03-08 05:24:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:54,759 INFO L471 AbstractCegarLoop]: Abstraction has 20534 states and 33023 transitions. [2025-03-08 05:24:54,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-03-08 05:24:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 20534 states and 33023 transitions. [2025-03-08 05:24:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2025-03-08 05:24:54,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:54,765 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:54,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2025-03-08 05:24:54,765 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:54,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1328318630, now seen corresponding path program 1 times [2025-03-08 05:24:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:54,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781785359] [2025-03-08 05:24:54,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:54,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-08 05:24:54,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-08 05:24:54,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:54,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2025-03-08 05:24:55,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:55,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781785359] [2025-03-08 05:24:55,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781785359] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:55,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572294542] [2025-03-08 05:24:55,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:55,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:55,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:55,114 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:55,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-08 05:24:55,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 322 statements into 1 equivalence classes. [2025-03-08 05:24:55,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 322 of 322 statements. [2025-03-08 05:24:55,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:55,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:55,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:55,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-03-08 05:24:55,493 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572294542] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:55,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:55,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:24:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999614941] [2025-03-08 05:24:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:55,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:55,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:55,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:24:55,494 INFO L87 Difference]: Start difference. First operand 20534 states and 33023 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-08 05:24:56,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:24:56,555 INFO L93 Difference]: Finished difference Result 41696 states and 67706 transitions. [2025-03-08 05:24:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:24:56,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 322 [2025-03-08 05:24:56,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:24:56,667 INFO L225 Difference]: With dead ends: 41696 [2025-03-08 05:24:56,667 INFO L226 Difference]: Without dead ends: 21302 [2025-03-08 05:24:56,744 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:24:56,744 INFO L435 NwaCegarLoop]: 771 mSDtfsCounter, 142 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:24:56,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2290 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:24:56,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21302 states. [2025-03-08 05:24:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21302 to 21158. [2025-03-08 05:24:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21158 states, 16111 states have (on average 1.5568245298243437) internal successors, (25082), 16850 states have internal predecessors, (25082), 3768 states have call successors, (3768), 940 states have call predecessors, (3768), 1278 states have return successors, (5341), 3831 states have call predecessors, (5341), 3764 states have call successors, (5341) [2025-03-08 05:24:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21158 states to 21158 states and 34191 transitions. [2025-03-08 05:24:58,327 INFO L78 Accepts]: Start accepts. Automaton has 21158 states and 34191 transitions. Word has length 322 [2025-03-08 05:24:58,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:24:58,329 INFO L471 AbstractCegarLoop]: Abstraction has 21158 states and 34191 transitions. [2025-03-08 05:24:58,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-08 05:24:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 21158 states and 34191 transitions. [2025-03-08 05:24:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-08 05:24:58,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:24:58,335 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:24:58,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-08 05:24:58,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-08 05:24:58,536 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:24:58,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:24:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1626958511, now seen corresponding path program 1 times [2025-03-08 05:24:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:24:58,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993821727] [2025-03-08 05:24:58,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:24:58,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-08 05:24:58,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-08 05:24:58,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:58,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:58,601 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 15 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-08 05:24:58,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:24:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993821727] [2025-03-08 05:24:58,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993821727] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:24:58,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846227611] [2025-03-08 05:24:58,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:24:58,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:24:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:24:58,604 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:24:58,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-08 05:24:58,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-08 05:24:58,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-08 05:24:58,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:24:58,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:24:58,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:24:58,934 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:24:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-03-08 05:24:58,950 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:24:58,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846227611] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:24:58,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:24:58,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-08 05:24:58,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33019988] [2025-03-08 05:24:58,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:24:58,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:24:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:24:58,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:24:58,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:24:58,951 INFO L87 Difference]: Start difference. First operand 21158 states and 34191 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 05:25:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:00,110 INFO L93 Difference]: Finished difference Result 42865 states and 69742 transitions. [2025-03-08 05:25:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:25:00,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 249 [2025-03-08 05:25:00,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:00,220 INFO L225 Difference]: With dead ends: 42865 [2025-03-08 05:25:00,220 INFO L226 Difference]: Without dead ends: 21526 [2025-03-08 05:25:00,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:25:00,289 INFO L435 NwaCegarLoop]: 814 mSDtfsCounter, 10 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:00,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2405 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:25:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21526 states. [2025-03-08 05:25:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21526 to 21462. [2025-03-08 05:25:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21462 states, 16377 states have (on average 1.5176161690175245) internal successors, (24854), 17116 states have internal predecessors, (24854), 3768 states have call successors, (3768), 978 states have call predecessors, (3768), 1316 states have return successors, (5395), 3831 states have call predecessors, (5395), 3764 states have call successors, (5395) [2025-03-08 05:25:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21462 states to 21462 states and 34017 transitions. [2025-03-08 05:25:01,270 INFO L78 Accepts]: Start accepts. Automaton has 21462 states and 34017 transitions. Word has length 249 [2025-03-08 05:25:01,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:01,270 INFO L471 AbstractCegarLoop]: Abstraction has 21462 states and 34017 transitions. [2025-03-08 05:25:01,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-08 05:25:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 21462 states and 34017 transitions. [2025-03-08 05:25:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2025-03-08 05:25:01,276 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:01,276 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:25:01,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-03-08 05:25:01,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-03-08 05:25:01,477 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:01,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash 522055686, now seen corresponding path program 1 times [2025-03-08 05:25:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724542667] [2025-03-08 05:25:01,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:01,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 326 statements into 1 equivalence classes. [2025-03-08 05:25:01,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 326 of 326 statements. [2025-03-08 05:25:01,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:01,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2025-03-08 05:25:01,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:01,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724542667] [2025-03-08 05:25:01,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724542667] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:01,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78775610] [2025-03-08 05:25:01,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:01,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:01,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:01,730 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:01,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-03-08 05:25:01,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 326 statements into 1 equivalence classes. [2025-03-08 05:25:02,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 326 of 326 statements. [2025-03-08 05:25:02,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:02,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:02,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:25:02,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2025-03-08 05:25:02,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:25:02,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78775610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:25:02,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:25:02,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-08 05:25:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920666207] [2025-03-08 05:25:02,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:25:02,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 05:25:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:02,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 05:25:02,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:25:02,136 INFO L87 Difference]: Start difference. First operand 21462 states and 34017 transitions. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-08 05:25:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:25:03,254 INFO L93 Difference]: Finished difference Result 43600 states and 69678 transitions. [2025-03-08 05:25:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:25:03,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 326 [2025-03-08 05:25:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:25:03,368 INFO L225 Difference]: With dead ends: 43600 [2025-03-08 05:25:03,368 INFO L226 Difference]: Without dead ends: 22278 [2025-03-08 05:25:03,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:25:03,441 INFO L435 NwaCegarLoop]: 770 mSDtfsCounter, 140 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:25:03,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 2287 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:25:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22278 states. [2025-03-08 05:25:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22278 to 22086. [2025-03-08 05:25:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22086 states, 16985 states have (on average 1.532057697968796) internal successors, (26022), 17724 states have internal predecessors, (26022), 3768 states have call successors, (3768), 994 states have call predecessors, (3768), 1332 states have return successors, (5395), 3831 states have call predecessors, (5395), 3764 states have call successors, (5395) [2025-03-08 05:25:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22086 states to 22086 states and 35185 transitions. [2025-03-08 05:25:04,536 INFO L78 Accepts]: Start accepts. Automaton has 22086 states and 35185 transitions. Word has length 326 [2025-03-08 05:25:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:25:04,536 INFO L471 AbstractCegarLoop]: Abstraction has 22086 states and 35185 transitions. [2025-03-08 05:25:04,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-03-08 05:25:04,537 INFO L276 IsEmpty]: Start isEmpty. Operand 22086 states and 35185 transitions. [2025-03-08 05:25:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2025-03-08 05:25:04,542 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:25:04,542 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:25:04,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2025-03-08 05:25:04,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-03-08 05:25:04,743 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:25:04,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:25:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1691350010, now seen corresponding path program 1 times [2025-03-08 05:25:04,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:25:04,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913484131] [2025-03-08 05:25:04,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:04,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:25:04,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-03-08 05:25:04,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-03-08 05:25:04,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:04,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-08 05:25:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:25:04,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913484131] [2025-03-08 05:25:04,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913484131] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:25:04,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762664543] [2025-03-08 05:25:04,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:25:04,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:25:04,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:25:04,812 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:25:04,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-03-08 05:25:04,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-03-08 05:25:05,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-03-08 05:25:05,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:25:05,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:25:05,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 05:25:05,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:25:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 94 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2025-03-08 05:25:05,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:25:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2025-03-08 05:25:05,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762664543] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:25:05,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:25:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 8] total 16 [2025-03-08 05:25:05,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924978044] [2025-03-08 05:25:05,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:25:05,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-08 05:25:05,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:25:05,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-08 05:25:05,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2025-03-08 05:25:05,618 INFO L87 Difference]: Start difference. First operand 22086 states and 35185 transitions. Second operand has 16 states, 16 states have (on average 15.8125) internal successors, (253), 14 states have internal predecessors, (253), 7 states have call successors, (52), 5 states have call predecessors, (52), 11 states have return successors, (53), 9 states have call predecessors, (53), 7 states have call successors, (53)