./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec1_product21.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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:14:09,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:14:09,596 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:14:09,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:14:09,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:14:09,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:14:09,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:14:09,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:14:09,630 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:14:09,630 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:14:09,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:14:09,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:14:09,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:14:09,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:14:09,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:14:09,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:14:09,633 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:14:09,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:14:09,634 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:14:09,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:14:09,634 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 -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2025-03-03 14:14:09,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:14:09,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:14:09,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:14:09,868 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:14:09,868 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:14:09,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2025-03-03 14:14:11,129 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c45db43/282bafe888424dd28e1f889911af63f9/FLAGc12ba9eca [2025-03-03 14:14:11,468 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:14:11,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2025-03-03 14:14:11,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c45db43/282bafe888424dd28e1f889911af63f9/FLAGc12ba9eca [2025-03-03 14:14:11,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3c45db43/282bafe888424dd28e1f889911af63f9 [2025-03-03 14:14:11,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:14:11,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:14:11,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:14:11,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:14:11,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:14:11,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:14:11" (1/1) ... [2025-03-03 14:14:11,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5b8ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:11, skipping insertion in model container [2025-03-03 14:14:11,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:14:11" (1/1) ... [2025-03-03 14:14:11,755 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:14:12,158 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_product21.cil.c[66510,66523] [2025-03-03 14:14:12,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:14:12,182 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:14:12,189 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2025-03-03 14:14:12,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1575] [2025-03-03 14:14:12,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [1934] [2025-03-03 14:14:12,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2300] [2025-03-03 14:14:12,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2391] [2025-03-03 14:14:12,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2404] [2025-03-03 14:14:12,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2439] [2025-03-03 14:14:12,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3105] [2025-03-03 14:14:12,192 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3114] [2025-03-03 14:14:12,193 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [3232] [2025-03-03 14:14:12,269 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_product21.cil.c[66510,66523] [2025-03-03 14:14:12,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:14:12,297 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:14:12,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12 WrapperNode [2025-03-03 14:14:12,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:14:12,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:14:12,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:14:12,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:14:12,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,320 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,350 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 846 [2025-03-03 14:14:12,350 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:14:12,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:14:12,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:14:12,351 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:14:12,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,364 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,396 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2025-03-03 14:14:12,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,414 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:14:12,439 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:14:12,439 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:14:12,439 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:14:12,443 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (1/1) ... [2025-03-03 14:14:12,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:14:12,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:12,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 14:14:12,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 14:14:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-03 14:14:12,486 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-03 14:14:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:14:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:14:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:14:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-03 14:14:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-03 14:14:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:14:12,487 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:14:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:14:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:14:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:14:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:14:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:14:12,488 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:14:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:14:12,489 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:14:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-03 14:14:12,490 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-03 14:14:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:14:12,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:14:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:14:12,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:14:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:14:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:14:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:14:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:14:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:14:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:14:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:14:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:14:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:14:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:14:12,491 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:14:12,491 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:14:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:14:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:14:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:14:12,492 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:14:12,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2025-03-03 14:14:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:14:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:14:12,493 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:14:12,493 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:14:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:14:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:14:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2025-03-03 14:14:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2025-03-03 14:14:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:14:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:14:12,494 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:14:12,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:14:12,630 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:14:12,632 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:14:12,682 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3229: #res := ~retValue_acc~27; [2025-03-03 14:14:12,700 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3151: #res := ~retValue_acc~25; [2025-03-03 14:14:12,703 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L138: #res := ~retValue_acc~0; [2025-03-03 14:14:12,710 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L291: #res := ~retValue_acc~1; [2025-03-03 14:14:12,898 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L901-1: isAnyLiftButtonPressed_#res#1 := isAnyLiftButtonPressed_~retValue_acc~10#1; [2025-03-03 14:14:12,899 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L867: #res#1 := ~retValue_acc~9#1; [2025-03-03 14:14:12,944 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L999: #res := ~retValue_acc~13; [2025-03-03 14:14:12,957 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3190: #res := ~retValue_acc~26; [2025-03-03 14:14:12,985 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L334: #res := ~retValue_acc~3; [2025-03-03 14:14:13,064 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L463-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~6#1; [2025-03-03 14:14:13,064 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L476-1: isIdle_#res#1 := isIdle_~retValue_acc~7#1; [2025-03-03 14:14:13,194 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L985-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~12#1; [2025-03-03 14:14:13,194 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L957-1: stopRequestedAtCurrentFloor__wrappee__weight_#res#1 := stopRequestedAtCurrentFloor__wrappee__weight_~retValue_acc~11#1; [2025-03-03 14:14:13,250 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2791: #res := ~retValue_acc~23; [2025-03-03 14:14:13,352 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L828: #res := ~retValue_acc~8; [2025-03-03 14:14:13,403 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1931-1: main_#res#1 := main_~retValue_acc~16#1; [2025-03-03 14:14:13,403 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2436-1: valid_product_#res#1 := valid_product_~retValue_acc~21#1; [2025-03-03 14:14:13,413 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2550: #res := ~retValue_acc~22; [2025-03-03 14:14:13,415 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L300: #res := ~retValue_acc~2; [2025-03-03 14:14:13,419 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3102: #res := ~retValue_acc~24; [2025-03-03 14:14:13,532 INFO L? ?]: Removed 448 outVars from TransFormulas that were not future-live. [2025-03-03 14:14:13,532 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:14:13,553 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:14:13,553 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:14:13,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:14:13 BoogieIcfgContainer [2025-03-03 14:14:13,554 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:14:13,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:14:13,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:14:13,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:14:13,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:14:11" (1/3) ... [2025-03-03 14:14:13,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d52ec30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:14:13, skipping insertion in model container [2025-03-03 14:14:13,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:12" (2/3) ... [2025-03-03 14:14:13,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d52ec30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:14:13, skipping insertion in model container [2025-03-03 14:14:13,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:14:13" (3/3) ... [2025-03-03 14:14:13,561 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2025-03-03 14:14:13,573 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:14:13,574 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product21.cil.c that has 26 procedures, 569 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:14:13,635 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:14:13,644 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;@1583fae5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:14:13,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:14:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 465 states have internal predecessors, (750), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-03 14:14:13,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-03-03 14:14:13,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:13,677 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:13,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:13,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:13,683 INFO L85 PathProgramCache]: Analyzing trace with hash -664723090, now seen corresponding path program 1 times [2025-03-03 14:14:13,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117230097] [2025-03-03 14:14:13,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:13,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-03 14:14:13,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-03 14:14:13,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:13,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:14,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:14,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117230097] [2025-03-03 14:14:14,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117230097] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:14,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999932311] [2025-03-03 14:14:14,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:14,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:14,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:14,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:14,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:14:14,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-03 14:14:14,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-03 14:14:14,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:14,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:14,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1829 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 14:14:14,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 14:14:14,549 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:14,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999932311] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:14,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:14,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-03 14:14:14,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825762127] [2025-03-03 14:14:14,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:14,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:14:14,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:14,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:14:14,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:14,569 INFO L87 Difference]: Start difference. First operand has 569 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 465 states have internal predecessors, (750), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 14:14:14,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:14,619 INFO L93 Difference]: Finished difference Result 590 states and 976 transitions. [2025-03-03 14:14:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:14:14,620 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2025-03-03 14:14:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:14,631 INFO L225 Difference]: With dead ends: 590 [2025-03-03 14:14:14,631 INFO L226 Difference]: Without dead ends: 561 [2025-03-03 14:14:14,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:14,635 INFO L435 NwaCegarLoop]: 938 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, 938 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:14,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:14,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-03 14:14:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-03-03 14:14:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 457 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:14,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 931 transitions. [2025-03-03 14:14:14,717 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 931 transitions. Word has length 111 [2025-03-03 14:14:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:14,718 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 931 transitions. [2025-03-03 14:14:14,719 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2025-03-03 14:14:14,719 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 931 transitions. [2025-03-03 14:14:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-03 14:14:14,726 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:14,726 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:14,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:14,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 14:14:14,931 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:14,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1435772597, now seen corresponding path program 1 times [2025-03-03 14:14:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866218268] [2025-03-03 14:14:14,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:14,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 14:14:14,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 14:14:14,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:14,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:15,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866218268] [2025-03-03 14:14:15,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866218268] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:15,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212540493] [2025-03-03 14:14:15,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:15,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:15,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:15,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:14:15,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 14:14:15,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 14:14:15,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:15,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:15,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 1832 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:15,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:15,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:15,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212540493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:15,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:15,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530733008] [2025-03-03 14:14:15,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:15,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:15,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:15,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:15,530 INFO L87 Difference]: Start difference. First operand 561 states and 931 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:15,604 INFO L93 Difference]: Finished difference Result 1113 states and 1854 transitions. [2025-03-03 14:14:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 113 [2025-03-03 14:14:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:15,613 INFO L225 Difference]: With dead ends: 1113 [2025-03-03 14:14:15,614 INFO L226 Difference]: Without dead ends: 561 [2025-03-03 14:14:15,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:15,622 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 5 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:15,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2751 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:15,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-03 14:14:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-03-03 14:14:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 438 states have (on average 1.687214611872146) internal successors, (739), 457 states have internal predecessors, (739), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 930 transitions. [2025-03-03 14:14:15,661 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 930 transitions. Word has length 113 [2025-03-03 14:14:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:15,662 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 930 transitions. [2025-03-03 14:14:15,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 930 transitions. [2025-03-03 14:14:15,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-03 14:14:15,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:15,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:15,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:15,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-03 14:14:15,873 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:15,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:15,874 INFO L85 PathProgramCache]: Analyzing trace with hash 264790025, now seen corresponding path program 1 times [2025-03-03 14:14:15,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:15,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236308181] [2025-03-03 14:14:15,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:15,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-03 14:14:15,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-03 14:14:15,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:15,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:16,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:16,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236308181] [2025-03-03 14:14:16,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236308181] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:16,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347170073] [2025-03-03 14:14:16,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:16,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:16,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:16,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:16,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:14:16,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-03 14:14:16,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-03 14:14:16,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:16,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:16,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:16,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:16,417 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:16,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347170073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519297443] [2025-03-03 14:14:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:16,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:16,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:16,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:16,418 INFO L87 Difference]: Start difference. First operand 561 states and 930 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:16,484 INFO L93 Difference]: Finished difference Result 1113 states and 1852 transitions. [2025-03-03 14:14:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:16,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2025-03-03 14:14:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:16,490 INFO L225 Difference]: With dead ends: 1113 [2025-03-03 14:14:16,490 INFO L226 Difference]: Without dead ends: 561 [2025-03-03 14:14:16,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:16,495 INFO L435 NwaCegarLoop]: 919 mSDtfsCounter, 4 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:16,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2751 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2025-03-03 14:14:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2025-03-03 14:14:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 438 states have (on average 1.6849315068493151) internal successors, (738), 457 states have internal predecessors, (738), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 929 transitions. [2025-03-03 14:14:16,523 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 929 transitions. Word has length 115 [2025-03-03 14:14:16,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:16,523 INFO L471 AbstractCegarLoop]: Abstraction has 561 states and 929 transitions. [2025-03-03 14:14:16,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:16,523 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 929 transitions. [2025-03-03 14:14:16,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-03 14:14:16,527 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:16,527 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:16,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 14:14:16,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:16,728 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:16,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1935181205, now seen corresponding path program 1 times [2025-03-03 14:14:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480741902] [2025-03-03 14:14:16,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:16,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-03 14:14:16,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-03 14:14:16,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:16,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:16,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:16,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480741902] [2025-03-03 14:14:16,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480741902] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:16,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574880627] [2025-03-03 14:14:16,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:16,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:16,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:16,845 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:16,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:14:16,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-03 14:14:17,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-03 14:14:17,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:17,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:17,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:17,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:17,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:17,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:17,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574880627] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:17,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:17,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783150805] [2025-03-03 14:14:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:17,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:17,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:17,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:17,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:17,146 INFO L87 Difference]: Start difference. First operand 561 states and 929 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:17,207 INFO L93 Difference]: Finished difference Result 1120 states and 1859 transitions. [2025-03-03 14:14:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:17,207 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2025-03-03 14:14:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:17,211 INFO L225 Difference]: With dead ends: 1120 [2025-03-03 14:14:17,211 INFO L226 Difference]: Without dead ends: 570 [2025-03-03 14:14:17,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:17,214 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 13 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:17,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2748 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-03-03 14:14:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-03-03 14:14:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 465 states have internal predecessors, (750), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 941 transitions. [2025-03-03 14:14:17,240 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 941 transitions. Word has length 117 [2025-03-03 14:14:17,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:17,241 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 941 transitions. [2025-03-03 14:14:17,241 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 941 transitions. [2025-03-03 14:14:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-03 14:14:17,243 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:17,243 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:17,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 14:14:17,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:17,444 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:17,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:17,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1686129005, now seen corresponding path program 1 times [2025-03-03 14:14:17,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:17,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464363300] [2025-03-03 14:14:17,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:17,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-03 14:14:17,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-03 14:14:17,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:17,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:17,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464363300] [2025-03-03 14:14:17,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464363300] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:17,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896070771] [2025-03-03 14:14:17,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:17,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:17,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:17,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:17,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 14:14:17,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-03 14:14:17,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-03 14:14:17,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:17,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:17,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:17,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:17,884 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:17,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896070771] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:17,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:17,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:17,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409857994] [2025-03-03 14:14:17,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:17,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:17,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:17,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:17,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:17,886 INFO L87 Difference]: Start difference. First operand 570 states and 941 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:17,943 INFO L93 Difference]: Finished difference Result 1122 states and 1860 transitions. [2025-03-03 14:14:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:17,943 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2025-03-03 14:14:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:17,947 INFO L225 Difference]: With dead ends: 1122 [2025-03-03 14:14:17,947 INFO L226 Difference]: Without dead ends: 570 [2025-03-03 14:14:17,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:17,950 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 11 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:17,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2748 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-03-03 14:14:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-03-03 14:14:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6793721973094171) internal successors, (749), 465 states have internal predecessors, (749), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 940 transitions. [2025-03-03 14:14:17,966 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 940 transitions. Word has length 118 [2025-03-03 14:14:17,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:17,967 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 940 transitions. [2025-03-03 14:14:17,967 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 940 transitions. [2025-03-03 14:14:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-03 14:14:17,969 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:17,969 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:14:17,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 14:14:18,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:18,173 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:18,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:18,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1481014510, now seen corresponding path program 1 times [2025-03-03 14:14:18,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:18,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875504297] [2025-03-03 14:14:18,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:18,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:18,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-03 14:14:18,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-03 14:14:18,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:18,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:18,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:18,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875504297] [2025-03-03 14:14:18,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875504297] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:18,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082074124] [2025-03-03 14:14:18,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:18,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:18,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:18,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:18,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 14:14:18,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-03 14:14:18,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-03 14:14:18,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:18,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:18,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:18,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:18,603 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:18,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082074124] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:18,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:18,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:18,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39777443] [2025-03-03 14:14:18,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:18,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:18,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:18,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:18,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:18,604 INFO L87 Difference]: Start difference. First operand 570 states and 940 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:18,655 INFO L93 Difference]: Finished difference Result 1122 states and 1859 transitions. [2025-03-03 14:14:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:18,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2025-03-03 14:14:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:18,659 INFO L225 Difference]: With dead ends: 1122 [2025-03-03 14:14:18,659 INFO L226 Difference]: Without dead ends: 570 [2025-03-03 14:14:18,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:18,661 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 10 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:18,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2748 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2025-03-03 14:14:18,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2025-03-03 14:14:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6771300448430493) internal successors, (748), 465 states have internal predecessors, (748), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 939 transitions. [2025-03-03 14:14:18,677 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 939 transitions. Word has length 119 [2025-03-03 14:14:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:18,677 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 939 transitions. [2025-03-03 14:14:18,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 939 transitions. [2025-03-03 14:14:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-03-03 14:14:18,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:18,680 INFO L218 NwaCegarLoop]: trace histogram [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] [2025-03-03 14:14:18,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 14:14:18,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:18,880 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:18,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash 619708278, now seen corresponding path program 1 times [2025-03-03 14:14:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:18,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463459663] [2025-03-03 14:14:18,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:18,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-03 14:14:18,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-03 14:14:18,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:18,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463459663] [2025-03-03 14:14:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463459663] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145217238] [2025-03-03 14:14:19,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:19,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:19,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:19,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:19,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 14:14:19,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-03-03 14:14:19,294 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-03-03 14:14:19,294 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:19,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:19,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:19,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:14:19,333 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145217238] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:19,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:19,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139719389] [2025-03-03 14:14:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:19,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:19,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:19,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:19,335 INFO L87 Difference]: Start difference. First operand 570 states and 939 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:19,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:19,471 INFO L93 Difference]: Finished difference Result 1148 states and 1906 transitions. [2025-03-03 14:14:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:19,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2025-03-03 14:14:19,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:19,477 INFO L225 Difference]: With dead ends: 1148 [2025-03-03 14:14:19,477 INFO L226 Difference]: Without dead ends: 585 [2025-03-03 14:14:19,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:19,480 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 76 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:19,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2639 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-03-03 14:14:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 570. [2025-03-03 14:14:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6659192825112108) internal successors, (743), 465 states have internal predecessors, (743), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 934 transitions. [2025-03-03 14:14:19,497 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 934 transitions. Word has length 120 [2025-03-03 14:14:19,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:19,498 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 934 transitions. [2025-03-03 14:14:19,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 934 transitions. [2025-03-03 14:14:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-03 14:14:19,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:19,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:19,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:19,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:19,702 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:19,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:19,702 INFO L85 PathProgramCache]: Analyzing trace with hash -278975248, now seen corresponding path program 1 times [2025-03-03 14:14:19,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:19,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484920067] [2025-03-03 14:14:19,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:19,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:19,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-03 14:14:19,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-03 14:14:19,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:19,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:19,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484920067] [2025-03-03 14:14:19,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484920067] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071760232] [2025-03-03 14:14:19,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:19,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:19,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:19,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:19,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 14:14:19,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-03 14:14:20,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-03 14:14:20,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:20,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:20,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:20,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:14:20,182 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:20,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071760232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:20,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:20,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:20,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839607275] [2025-03-03 14:14:20,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:20,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:20,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:20,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:20,184 INFO L87 Difference]: Start difference. First operand 570 states and 934 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:20,293 INFO L93 Difference]: Finished difference Result 1148 states and 1896 transitions. [2025-03-03 14:14:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:20,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2025-03-03 14:14:20,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:20,297 INFO L225 Difference]: With dead ends: 1148 [2025-03-03 14:14:20,297 INFO L226 Difference]: Without dead ends: 585 [2025-03-03 14:14:20,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:20,300 INFO L435 NwaCegarLoop]: 893 mSDtfsCounter, 75 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:20,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2639 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-03-03 14:14:20,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 570. [2025-03-03 14:14:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.654708520179372) internal successors, (738), 465 states have internal predecessors, (738), 98 states have call successors, (98), 26 states have call predecessors, (98), 25 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 929 transitions. [2025-03-03 14:14:20,316 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 929 transitions. Word has length 122 [2025-03-03 14:14:20,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:20,316 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 929 transitions. [2025-03-03 14:14:20,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:20,316 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 929 transitions. [2025-03-03 14:14:20,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-03-03 14:14:20,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:20,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:20,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 14:14:20,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-03 14:14:20,519 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:20,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 660419542, now seen corresponding path program 1 times [2025-03-03 14:14:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:20,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432111204] [2025-03-03 14:14:20,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:20,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:20,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-03 14:14:20,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-03 14:14:20,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:20,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:20,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:20,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432111204] [2025-03-03 14:14:20,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432111204] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:20,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949805141] [2025-03-03 14:14:20,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:20,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:20,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:20,677 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:20,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 14:14:20,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 124 statements into 1 equivalence classes. [2025-03-03 14:14:20,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 124 of 124 statements. [2025-03-03 14:14:20,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:20,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:20,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:20,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:20,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:14:20,976 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:20,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949805141] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:20,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:20,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:20,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937045369] [2025-03-03 14:14:20,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:20,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:20,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:20,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:20,977 INFO L87 Difference]: Start difference. First operand 570 states and 929 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:21,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:21,125 INFO L93 Difference]: Finished difference Result 1199 states and 1969 transitions. [2025-03-03 14:14:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:21,125 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2025-03-03 14:14:21,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:21,129 INFO L225 Difference]: With dead ends: 1199 [2025-03-03 14:14:21,129 INFO L226 Difference]: Without dead ends: 651 [2025-03-03 14:14:21,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:21,135 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 130 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:21,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2670 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:21,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2025-03-03 14:14:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 621. [2025-03-03 14:14:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 496 states have (on average 1.659274193548387) internal successors, (823), 515 states have internal predecessors, (823), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:21,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1014 transitions. [2025-03-03 14:14:21,152 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1014 transitions. Word has length 124 [2025-03-03 14:14:21,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:21,153 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 1014 transitions. [2025-03-03 14:14:21,153 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:21,153 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1014 transitions. [2025-03-03 14:14:21,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 14:14:21,155 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:21,155 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:21,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-03 14:14:21,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:21,356 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:21,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:21,356 INFO L85 PathProgramCache]: Analyzing trace with hash 548383381, now seen corresponding path program 1 times [2025-03-03 14:14:21,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:21,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786827350] [2025-03-03 14:14:21,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:21,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:21,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:14:21,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:14:21,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:21,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:21,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786827350] [2025-03-03 14:14:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786827350] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719272853] [2025-03-03 14:14:21,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:21,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:21,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:21,487 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:21,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 14:14:21,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:14:21,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:14:21,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:21,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:21,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:21,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:14:21,805 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719272853] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:21,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:21,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468850325] [2025-03-03 14:14:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:21,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:21,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:21,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:21,806 INFO L87 Difference]: Start difference. First operand 621 states and 1014 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:21,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:21,950 INFO L93 Difference]: Finished difference Result 1214 states and 1993 transitions. [2025-03-03 14:14:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:21,951 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2025-03-03 14:14:21,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:21,955 INFO L225 Difference]: With dead ends: 1214 [2025-03-03 14:14:21,955 INFO L226 Difference]: Without dead ends: 651 [2025-03-03 14:14:21,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:21,957 INFO L435 NwaCegarLoop]: 925 mSDtfsCounter, 124 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2643 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:21,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2643 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2025-03-03 14:14:21,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 621. [2025-03-03 14:14:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 496 states have (on average 1.6491935483870968) internal successors, (818), 515 states have internal predecessors, (818), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 1009 transitions. [2025-03-03 14:14:21,976 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 1009 transitions. Word has length 125 [2025-03-03 14:14:21,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:21,976 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 1009 transitions. [2025-03-03 14:14:21,976 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, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 1009 transitions. [2025-03-03 14:14:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 14:14:21,979 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:21,979 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:21,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-03 14:14:22,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 14:14:22,179 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:22,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1513969263, now seen corresponding path program 1 times [2025-03-03 14:14:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:22,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127926538] [2025-03-03 14:14:22,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:22,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:14:22,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:14:22,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:22,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:22,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127926538] [2025-03-03 14:14:22,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127926538] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:22,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048960946] [2025-03-03 14:14:22,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:22,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:22,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:22,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 14:14:22,439 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:14:22,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:14:22,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:22,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:22,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:22,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:14:22,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:22,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048960946] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:22,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:22,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:14:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77619408] [2025-03-03 14:14:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:22,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:22,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:22,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:22,677 INFO L87 Difference]: Start difference. First operand 621 states and 1009 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:22,790 INFO L93 Difference]: Finished difference Result 1207 states and 1973 transitions. [2025-03-03 14:14:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2025-03-03 14:14:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:22,795 INFO L225 Difference]: With dead ends: 1207 [2025-03-03 14:14:22,796 INFO L226 Difference]: Without dead ends: 659 [2025-03-03 14:14:22,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:14:22,799 INFO L435 NwaCegarLoop]: 899 mSDtfsCounter, 113 mSDsluCounter, 5305 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6204 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:22,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6204 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-03 14:14:22,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 640. [2025-03-03 14:14:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 512 states have (on average 1.6484375) internal successors, (844), 533 states have internal predecessors, (844), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2025-03-03 14:14:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1039 transitions. [2025-03-03 14:14:22,818 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1039 transitions. Word has length 125 [2025-03-03 14:14:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:22,819 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1039 transitions. [2025-03-03 14:14:22,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1039 transitions. [2025-03-03 14:14:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 14:14:22,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:22,822 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:22,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:23,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 14:14:23,023 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:23,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:23,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1794415344, now seen corresponding path program 1 times [2025-03-03 14:14:23,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:23,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903506225] [2025-03-03 14:14:23,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:23,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:23,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:14:23,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:14:23,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:23,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:23,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:23,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:23,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903506225] [2025-03-03 14:14:23,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903506225] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:23,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415097072] [2025-03-03 14:14:23,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:23,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:23,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:23,112 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:23,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-03 14:14:23,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-03 14:14:23,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 14:14:23,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:23,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:23,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:23,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:23,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:23,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415097072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:23,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:23,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:14:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989583308] [2025-03-03 14:14:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:23,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:23,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:23,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:23,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:23,429 INFO L87 Difference]: Start difference. First operand 640 states and 1039 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:23,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:23,508 INFO L93 Difference]: Finished difference Result 1145 states and 1873 transitions. [2025-03-03 14:14:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:23,508 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 125 [2025-03-03 14:14:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:23,513 INFO L225 Difference]: With dead ends: 1145 [2025-03-03 14:14:23,514 INFO L226 Difference]: Without dead ends: 664 [2025-03-03 14:14:23,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:23,517 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 86 mSDsluCounter, 4481 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5393 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:23,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5393 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2025-03-03 14:14:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 659. [2025-03-03 14:14:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6477272727272727) internal successors, (870), 551 states have internal predecessors, (870), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1069 transitions. [2025-03-03 14:14:23,546 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1069 transitions. Word has length 125 [2025-03-03 14:14:23,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:23,547 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1069 transitions. [2025-03-03 14:14:23,547 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:23,547 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1069 transitions. [2025-03-03 14:14:23,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-03 14:14:23,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:23,551 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:23,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-03 14:14:23,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 14:14:23,751 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:23,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1373965932, now seen corresponding path program 1 times [2025-03-03 14:14:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:23,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128867622] [2025-03-03 14:14:23,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:23,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-03 14:14:23,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 14:14:23,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:23,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128867622] [2025-03-03 14:14:23,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128867622] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:23,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963053676] [2025-03-03 14:14:23,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:23,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:23,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:23,815 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:23,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-03 14:14:23,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-03 14:14:24,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 14:14:24,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:24,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:24,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:24,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 14:14:24,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963053676] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:24,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:24,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035053821] [2025-03-03 14:14:24,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:24,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:24,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:24,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:24,109 INFO L87 Difference]: Start difference. First operand 659 states and 1069 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:24,151 INFO L93 Difference]: Finished difference Result 1212 states and 1983 transitions. [2025-03-03 14:14:24,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:24,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2025-03-03 14:14:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:24,156 INFO L225 Difference]: With dead ends: 1212 [2025-03-03 14:14:24,156 INFO L226 Difference]: Without dead ends: 659 [2025-03-03 14:14:24,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:24,159 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 13 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:24,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2717 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:24,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2025-03-03 14:14:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2025-03-03 14:14:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6401515151515151) internal successors, (866), 551 states have internal predecessors, (866), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1065 transitions. [2025-03-03 14:14:24,201 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1065 transitions. Word has length 126 [2025-03-03 14:14:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:24,201 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1065 transitions. [2025-03-03 14:14:24,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1065 transitions. [2025-03-03 14:14:24,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-03 14:14:24,203 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:24,204 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:24,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-03 14:14:24,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-03 14:14:24,405 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:24,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1571085904, now seen corresponding path program 1 times [2025-03-03 14:14:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679157556] [2025-03-03 14:14:24,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:24,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:24,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-03 14:14:24,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 14:14:24,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:24,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679157556] [2025-03-03 14:14:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679157556] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:24,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618946961] [2025-03-03 14:14:24,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:24,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:24,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:24,470 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:24,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-03 14:14:24,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-03 14:14:24,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 14:14:24,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:24,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:24,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:24,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:24,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618946961] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:24,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:24,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:14:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746755366] [2025-03-03 14:14:24,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:24,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:24,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:24,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:24,825 INFO L87 Difference]: Start difference. First operand 659 states and 1065 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:24,897 INFO L93 Difference]: Finished difference Result 1175 states and 1920 transitions. [2025-03-03 14:14:24,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2025-03-03 14:14:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:24,902 INFO L225 Difference]: With dead ends: 1175 [2025-03-03 14:14:24,902 INFO L226 Difference]: Without dead ends: 694 [2025-03-03 14:14:24,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:24,905 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 95 mSDsluCounter, 4448 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5354 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:24,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5354 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-03-03 14:14:24,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 659. [2025-03-03 14:14:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6401515151515151) internal successors, (866), 551 states have internal predecessors, (866), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:24,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1065 transitions. [2025-03-03 14:14:24,923 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1065 transitions. Word has length 126 [2025-03-03 14:14:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:24,923 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1065 transitions. [2025-03-03 14:14:24,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1065 transitions. [2025-03-03 14:14:24,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-03-03 14:14:24,926 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:24,926 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:24,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:25,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:25,127 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:25,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:25,128 INFO L85 PathProgramCache]: Analyzing trace with hash -510239105, now seen corresponding path program 1 times [2025-03-03 14:14:25,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:25,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171447070] [2025-03-03 14:14:25,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:25,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:25,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-03 14:14:25,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 14:14:25,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:25,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:25,197 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 14:14:25,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:25,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171447070] [2025-03-03 14:14:25,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171447070] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:25,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588523495] [2025-03-03 14:14:25,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:25,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:25,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:25,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-03 14:14:25,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 126 statements into 1 equivalence classes. [2025-03-03 14:14:25,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 126 of 126 statements. [2025-03-03 14:14:25,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:25,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:25,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:25,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:25,543 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:25,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588523495] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:25,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:14:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217921019] [2025-03-03 14:14:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:25,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:25,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:25,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:25,544 INFO L87 Difference]: Start difference. First operand 659 states and 1065 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:25,664 INFO L93 Difference]: Finished difference Result 1160 states and 1894 transitions. [2025-03-03 14:14:25,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:25,665 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 126 [2025-03-03 14:14:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:25,669 INFO L225 Difference]: With dead ends: 1160 [2025-03-03 14:14:25,669 INFO L226 Difference]: Without dead ends: 679 [2025-03-03 14:14:25,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:25,673 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 113 mSDsluCounter, 5283 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6178 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:25,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6178 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:25,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-03-03 14:14:25,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 659. [2025-03-03 14:14:25,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6401515151515151) internal successors, (866), 551 states have internal predecessors, (866), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1065 transitions. [2025-03-03 14:14:25,695 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1065 transitions. Word has length 126 [2025-03-03 14:14:25,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:25,695 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1065 transitions. [2025-03-03 14:14:25,695 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1065 transitions. [2025-03-03 14:14:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-03-03 14:14:25,698 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:25,698 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:25,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:25,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-03 14:14:25,899 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:25,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:25,899 INFO L85 PathProgramCache]: Analyzing trace with hash 138599193, now seen corresponding path program 1 times [2025-03-03 14:14:25,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:25,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603914404] [2025-03-03 14:14:25,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:25,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:25,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:14:25,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:14:25,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:25,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-03 14:14:25,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:25,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603914404] [2025-03-03 14:14:25,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603914404] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:25,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610492267] [2025-03-03 14:14:25,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:25,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:25,991 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:25,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-03 14:14:26,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 127 statements into 1 equivalence classes. [2025-03-03 14:14:26,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 127 of 127 statements. [2025-03-03 14:14:26,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:26,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:26,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:26,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:26,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:26,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610492267] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:26,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:26,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:14:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978221683] [2025-03-03 14:14:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:26,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:26,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:26,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:26,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:26,311 INFO L87 Difference]: Start difference. First operand 659 states and 1065 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:26,431 INFO L93 Difference]: Finished difference Result 1160 states and 1895 transitions. [2025-03-03 14:14:26,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:26,431 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 127 [2025-03-03 14:14:26,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:26,435 INFO L225 Difference]: With dead ends: 1160 [2025-03-03 14:14:26,435 INFO L226 Difference]: Without dead ends: 679 [2025-03-03 14:14:26,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:14:26,438 INFO L435 NwaCegarLoop]: 895 mSDtfsCounter, 121 mSDsluCounter, 5273 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:26,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6168 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-03-03 14:14:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 659. [2025-03-03 14:14:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 528 states have (on average 1.6401515151515151) internal successors, (866), 551 states have internal predecessors, (866), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1065 transitions. [2025-03-03 14:14:26,459 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1065 transitions. Word has length 127 [2025-03-03 14:14:26,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:26,459 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 1065 transitions. [2025-03-03 14:14:26,460 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, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-03-03 14:14:26,460 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1065 transitions. [2025-03-03 14:14:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-03 14:14:26,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:26,462 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:26,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:26,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-03-03 14:14:26,663 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:26,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash 994476872, now seen corresponding path program 1 times [2025-03-03 14:14:26,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:26,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651845453] [2025-03-03 14:14:26,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:26,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:26,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-03 14:14:26,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-03 14:14:26,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:26,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-03-03 14:14:26,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:26,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651845453] [2025-03-03 14:14:26,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651845453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:26,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263582283] [2025-03-03 14:14:26,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:26,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:26,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:26,726 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:26,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-03 14:14:26,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-03 14:14:26,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-03 14:14:26,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:26,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:26,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 1841 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 14:14:26,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 14:14:26,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:26,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263582283] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:26,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:26,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-03 14:14:26,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238014844] [2025-03-03 14:14:26,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:26,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:26,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:26,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:26,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:26,997 INFO L87 Difference]: Start difference. First operand 659 states and 1065 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:27,021 INFO L93 Difference]: Finished difference Result 1138 states and 1863 transitions. [2025-03-03 14:14:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:27,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2025-03-03 14:14:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:27,025 INFO L225 Difference]: With dead ends: 1138 [2025-03-03 14:14:27,025 INFO L226 Difference]: Without dead ends: 662 [2025-03-03 14:14:27,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:27,027 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 0 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:27,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3648 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2025-03-03 14:14:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2025-03-03 14:14:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 531 states have (on average 1.6365348399246704) internal successors, (869), 554 states have internal predecessors, (869), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1068 transitions. [2025-03-03 14:14:27,067 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1068 transitions. Word has length 128 [2025-03-03 14:14:27,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:27,068 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1068 transitions. [2025-03-03 14:14:27,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2025-03-03 14:14:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1068 transitions. [2025-03-03 14:14:27,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-03-03 14:14:27,070 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:27,070 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:27,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:27,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-03 14:14:27,271 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:27,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash -235810757, now seen corresponding path program 1 times [2025-03-03 14:14:27,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:27,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530471478] [2025-03-03 14:14:27,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:27,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:14:27,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:14:27,287 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:27,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:14:27,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:27,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530471478] [2025-03-03 14:14:27,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530471478] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:27,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636858579] [2025-03-03 14:14:27,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:27,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:27,337 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:27,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-03 14:14:27,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 131 statements into 1 equivalence classes. [2025-03-03 14:14:27,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 131 of 131 statements. [2025-03-03 14:14:27,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:27,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:27,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 1848 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:27,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:27,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:27,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636858579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:27,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009146845] [2025-03-03 14:14:27,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:27,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:27,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:27,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:27,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:27,749 INFO L87 Difference]: Start difference. First operand 662 states and 1068 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 14:14:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:28,112 INFO L93 Difference]: Finished difference Result 710 states and 1139 transitions. [2025-03-03 14:14:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:28,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2025-03-03 14:14:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:28,116 INFO L225 Difference]: With dead ends: 710 [2025-03-03 14:14:28,116 INFO L226 Difference]: Without dead ends: 695 [2025-03-03 14:14:28,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:28,117 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 847 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:28,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 2345 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:28,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2025-03-03 14:14:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 665. [2025-03-03 14:14:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 534 states have (on average 1.6329588014981273) internal successors, (872), 557 states have internal predecessors, (872), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1071 transitions. [2025-03-03 14:14:28,138 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1071 transitions. Word has length 131 [2025-03-03 14:14:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:28,139 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1071 transitions. [2025-03-03 14:14:28,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-03 14:14:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1071 transitions. [2025-03-03 14:14:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-03 14:14:28,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:28,142 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:28,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:28,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-03 14:14:28,343 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:28,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash 383599225, now seen corresponding path program 1 times [2025-03-03 14:14:28,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:28,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902967107] [2025-03-03 14:14:28,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:28,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:28,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:14:28,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:14:28,360 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:28,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:14:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:28,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902967107] [2025-03-03 14:14:28,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902967107] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:28,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598138256] [2025-03-03 14:14:28,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:28,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:28,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:28,413 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:28,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-03 14:14:28,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-03 14:14:28,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-03 14:14:28,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:28,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:28,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:28,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:28,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:28,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:28,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598138256] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:28,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:28,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-03-03 14:14:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026575001] [2025-03-03 14:14:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:28,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:28,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:28,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:28,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:28,708 INFO L87 Difference]: Start difference. First operand 665 states and 1071 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), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:14:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:28,743 INFO L93 Difference]: Finished difference Result 680 states and 1089 transitions. [2025-03-03 14:14:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:28,743 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), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2025-03-03 14:14:28,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:28,747 INFO L225 Difference]: With dead ends: 680 [2025-03-03 14:14:28,747 INFO L226 Difference]: Without dead ends: 665 [2025-03-03 14:14:28,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:28,747 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 0 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:28,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3652 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:28,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2025-03-03 14:14:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2025-03-03 14:14:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 534 states have (on average 1.6310861423220975) internal successors, (871), 557 states have internal predecessors, (871), 100 states have call successors, (100), 27 states have call predecessors, (100), 30 states have return successors, (99), 93 states have call predecessors, (99), 95 states have call successors, (99) [2025-03-03 14:14:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1070 transitions. [2025-03-03 14:14:28,766 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1070 transitions. Word has length 137 [2025-03-03 14:14:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:28,766 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 1070 transitions. [2025-03-03 14:14:28,767 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), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2025-03-03 14:14:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1070 transitions. [2025-03-03 14:14:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2025-03-03 14:14:28,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:28,770 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:28,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:28,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:28,970 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:28,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1041331686, now seen corresponding path program 1 times [2025-03-03 14:14:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:28,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841188135] [2025-03-03 14:14:28,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:28,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:28,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-03 14:14:28,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-03 14:14:28,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:28,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:14:29,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:29,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841188135] [2025-03-03 14:14:29,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841188135] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:29,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115606555] [2025-03-03 14:14:29,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:29,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:29,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:29,047 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:29,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-03 14:14:29,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 147 statements into 1 equivalence classes. [2025-03-03 14:14:29,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 147 of 147 statements. [2025-03-03 14:14:29,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:29,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:29,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:29,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 14:14:29,345 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115606555] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:29,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:29,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-03 14:14:29,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373898104] [2025-03-03 14:14:29,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:29,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:29,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:29,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:29,346 INFO L87 Difference]: Start difference. First operand 665 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:29,382 INFO L93 Difference]: Finished difference Result 1304 states and 2110 transitions. [2025-03-03 14:14:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:29,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2025-03-03 14:14:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:29,386 INFO L225 Difference]: With dead ends: 1304 [2025-03-03 14:14:29,386 INFO L226 Difference]: Without dead ends: 640 [2025-03-03 14:14:29,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:14:29,388 INFO L435 NwaCegarLoop]: 908 mSDtfsCounter, 7 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:29,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2717 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:29,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2025-03-03 14:14:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 640. [2025-03-03 14:14:29,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 512 states have (on average 1.626953125) internal successors, (833), 533 states have internal predecessors, (833), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2025-03-03 14:14:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1028 transitions. [2025-03-03 14:14:29,406 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1028 transitions. Word has length 147 [2025-03-03 14:14:29,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:29,406 INFO L471 AbstractCegarLoop]: Abstraction has 640 states and 1028 transitions. [2025-03-03 14:14:29,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:29,406 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1028 transitions. [2025-03-03 14:14:29,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-03-03 14:14:29,409 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:29,409 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:29,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:29,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:29,609 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:29,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2091993155, now seen corresponding path program 1 times [2025-03-03 14:14:29,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:29,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576646932] [2025-03-03 14:14:29,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:29,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:29,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:14:29,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:14:29,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:29,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:29,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:29,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576646932] [2025-03-03 14:14:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576646932] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832466066] [2025-03-03 14:14:29,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:29,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:29,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:29,733 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:29,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-03 14:14:29,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 148 statements into 1 equivalence classes. [2025-03-03 14:14:30,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 148 of 148 statements. [2025-03-03 14:14:30,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:30,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:30,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:30,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-03 14:14:30,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:30,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832466066] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:30,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:30,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190989933] [2025-03-03 14:14:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:30,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:30,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:30,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:30,033 INFO L87 Difference]: Start difference. First operand 640 states and 1028 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:30,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:30,091 INFO L93 Difference]: Finished difference Result 1234 states and 2003 transitions. [2025-03-03 14:14:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:30,092 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2025-03-03 14:14:30,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:30,095 INFO L225 Difference]: With dead ends: 1234 [2025-03-03 14:14:30,095 INFO L226 Difference]: Without dead ends: 658 [2025-03-03 14:14:30,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:30,097 INFO L435 NwaCegarLoop]: 900 mSDtfsCounter, 7 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:30,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2687 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2025-03-03 14:14:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2025-03-03 14:14:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 530 states have (on average 1.609433962264151) internal successors, (853), 551 states have internal predecessors, (853), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2025-03-03 14:14:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1048 transitions. [2025-03-03 14:14:30,111 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1048 transitions. Word has length 148 [2025-03-03 14:14:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:30,111 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 1048 transitions. [2025-03-03 14:14:30,111 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), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1048 transitions. [2025-03-03 14:14:30,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-03-03 14:14:30,113 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:30,114 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:30,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:30,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:30,314 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:30,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:30,315 INFO L85 PathProgramCache]: Analyzing trace with hash -427578369, now seen corresponding path program 1 times [2025-03-03 14:14:30,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:30,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284458719] [2025-03-03 14:14:30,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:30,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:30,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 14:14:30,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 14:14:30,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:30,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:30,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 14:14:30,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:30,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284458719] [2025-03-03 14:14:30,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284458719] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:30,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124959349] [2025-03-03 14:14:30,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:30,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:30,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:30,431 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:30,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-03 14:14:30,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 149 statements into 1 equivalence classes. [2025-03-03 14:14:30,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 149 of 149 statements. [2025-03-03 14:14:30,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:30,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:30,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 14:14:30,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:14:30,725 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124959349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:30,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:30,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-03 14:14:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962682831] [2025-03-03 14:14:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:30,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:30,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:30,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:30,727 INFO L87 Difference]: Start difference. First operand 658 states and 1048 transitions. Second operand has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:14:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:30,787 INFO L93 Difference]: Finished difference Result 1285 states and 2060 transitions. [2025-03-03 14:14:30,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:30,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 149 [2025-03-03 14:14:30,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:30,791 INFO L225 Difference]: With dead ends: 1285 [2025-03-03 14:14:30,791 INFO L226 Difference]: Without dead ends: 658 [2025-03-03 14:14:30,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:30,794 INFO L435 NwaCegarLoop]: 926 mSDtfsCounter, 119 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5430 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:30,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5430 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2025-03-03 14:14:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 637. [2025-03-03 14:14:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 509 states have (on average 1.6090373280943024) internal successors, (819), 530 states have internal predecessors, (819), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2025-03-03 14:14:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1014 transitions. [2025-03-03 14:14:30,808 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1014 transitions. Word has length 149 [2025-03-03 14:14:30,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:30,808 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1014 transitions. [2025-03-03 14:14:30,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:14:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1014 transitions. [2025-03-03 14:14:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-03-03 14:14:30,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:30,810 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:30,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:31,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:31,011 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:31,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2097639989, now seen corresponding path program 1 times [2025-03-03 14:14:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:31,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371203956] [2025-03-03 14:14:31,012 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:31,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-03 14:14:31,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-03 14:14:31,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:31,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:31,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:31,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371203956] [2025-03-03 14:14:31,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371203956] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:31,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478778305] [2025-03-03 14:14:31,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:31,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:31,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:31,150 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:31,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-03 14:14:31,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 151 statements into 1 equivalence classes. [2025-03-03 14:14:31,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 151 of 151 statements. [2025-03-03 14:14:31,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:31,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:31,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 1909 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:31,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 14:14:31,515 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:31,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478778305] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:31,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:31,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-03 14:14:31,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329250948] [2025-03-03 14:14:31,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:31,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:31,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:31,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:31,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:31,518 INFO L87 Difference]: Start difference. First operand 637 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:31,604 INFO L93 Difference]: Finished difference Result 1267 states and 2030 transitions. [2025-03-03 14:14:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:31,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 151 [2025-03-03 14:14:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:31,611 INFO L225 Difference]: With dead ends: 1267 [2025-03-03 14:14:31,612 INFO L226 Difference]: Without dead ends: 661 [2025-03-03 14:14:31,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:31,614 INFO L435 NwaCegarLoop]: 891 mSDtfsCounter, 128 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:31,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2596 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2025-03-03 14:14:31,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 637. [2025-03-03 14:14:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 509 states have (on average 1.6070726915520628) internal successors, (818), 530 states have internal predecessors, (818), 99 states have call successors, (99), 27 states have call predecessors, (99), 28 states have return successors, (96), 92 states have call predecessors, (96), 94 states have call successors, (96) [2025-03-03 14:14:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1013 transitions. [2025-03-03 14:14:31,634 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1013 transitions. Word has length 151 [2025-03-03 14:14:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:31,635 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 1013 transitions. [2025-03-03 14:14:31,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1013 transitions. [2025-03-03 14:14:31,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-03 14:14:31,637 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:31,637 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:31,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:31,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:31,838 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:31,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:31,838 INFO L85 PathProgramCache]: Analyzing trace with hash -647906294, now seen corresponding path program 1 times [2025-03-03 14:14:31,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:31,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426045547] [2025-03-03 14:14:31,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:31,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:31,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-03 14:14:31,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-03 14:14:31,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:31,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-03-03 14:14:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426045547] [2025-03-03 14:14:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426045547] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:31,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:31,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:14:31,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451793985] [2025-03-03 14:14:31,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:31,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:31,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:31,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:31,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:31,903 INFO L87 Difference]: Start difference. First operand 637 states and 1013 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:31,931 INFO L93 Difference]: Finished difference Result 1202 states and 1939 transitions. [2025-03-03 14:14:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 152 [2025-03-03 14:14:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:31,934 INFO L225 Difference]: With dead ends: 1202 [2025-03-03 14:14:31,935 INFO L226 Difference]: Without dead ends: 597 [2025-03-03 14:14:31,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:14:31,936 INFO L435 NwaCegarLoop]: 906 mSDtfsCounter, 8 mSDsluCounter, 1808 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:31,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2714 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:31,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2025-03-03 14:14:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2025-03-03 14:14:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 472 states have (on average 1.5995762711864407) internal successors, (755), 491 states have internal predecessors, (755), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 946 transitions. [2025-03-03 14:14:31,949 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 946 transitions. Word has length 152 [2025-03-03 14:14:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:31,949 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 946 transitions. [2025-03-03 14:14:31,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2025-03-03 14:14:31,949 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 946 transitions. [2025-03-03 14:14:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-03 14:14:31,951 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:31,951 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:31,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-03 14:14:31,951 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:31,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:31,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2087920330, now seen corresponding path program 1 times [2025-03-03 14:14:31,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:31,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112596271] [2025-03-03 14:14:31,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:31,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:31,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:14:31,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:14:31,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:31,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 14:14:32,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:32,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112596271] [2025-03-03 14:14:32,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112596271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:32,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:32,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:14:32,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001205123] [2025-03-03 14:14:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:32,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:32,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:32,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:32,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:32,073 INFO L87 Difference]: Start difference. First operand 597 states and 946 transitions. Second operand has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:14:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:32,121 INFO L93 Difference]: Finished difference Result 1105 states and 1778 transitions. [2025-03-03 14:14:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:32,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2025-03-03 14:14:32,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:32,125 INFO L225 Difference]: With dead ends: 1105 [2025-03-03 14:14:32,125 INFO L226 Difference]: Without dead ends: 583 [2025-03-03 14:14:32,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:32,127 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 88 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:32,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5256 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:32,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2025-03-03 14:14:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2025-03-03 14:14:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 458 states have (on average 1.5938864628820961) internal successors, (730), 477 states have internal predecessors, (730), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 921 transitions. [2025-03-03 14:14:32,140 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 921 transitions. Word has length 153 [2025-03-03 14:14:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:32,140 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 921 transitions. [2025-03-03 14:14:32,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:14:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 921 transitions. [2025-03-03 14:14:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-03 14:14:32,142 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:32,142 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:32,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-03 14:14:32,142 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:32,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:32,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1220685047, now seen corresponding path program 1 times [2025-03-03 14:14:32,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:32,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300447363] [2025-03-03 14:14:32,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:32,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-03 14:14:32,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-03 14:14:32,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:32,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-03 14:14:32,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:32,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300447363] [2025-03-03 14:14:32,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300447363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:32,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:32,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:14:32,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042608582] [2025-03-03 14:14:32,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:32,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:14:32,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:32,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:14:32,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:32,425 INFO L87 Difference]: Start difference. First operand 583 states and 921 transitions. Second operand has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:14:32,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:32,541 INFO L93 Difference]: Finished difference Result 1132 states and 1806 transitions. [2025-03-03 14:14:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 14:14:32,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 154 [2025-03-03 14:14:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:32,544 INFO L225 Difference]: With dead ends: 1132 [2025-03-03 14:14:32,545 INFO L226 Difference]: Without dead ends: 574 [2025-03-03 14:14:32,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:32,546 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 45 mSDsluCounter, 6745 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7594 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 [2025-03-03 14:14:32,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7594 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-03 14:14:32,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2025-03-03 14:14:32,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 449 states have (on average 1.5924276169265033) internal successors, (715), 468 states have internal predecessors, (715), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2025-03-03 14:14:32,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 906 transitions. [2025-03-03 14:14:32,558 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 906 transitions. Word has length 154 [2025-03-03 14:14:32,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:32,558 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 906 transitions. [2025-03-03 14:14:32,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2025-03-03 14:14:32,558 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 906 transitions. [2025-03-03 14:14:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-03 14:14:32,560 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:32,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:32,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-03 14:14:32,560 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:32,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1327046470, now seen corresponding path program 1 times [2025-03-03 14:14:32,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051611013] [2025-03-03 14:14:32,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:32,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-03 14:14:32,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-03 14:14:32,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:32,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:32,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:32,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051611013] [2025-03-03 14:14:32,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051611013] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:32,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:32,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:14:32,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820568873] [2025-03-03 14:14:32,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:32,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:32,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:32,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:32,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:32,668 INFO L87 Difference]: Start difference. First operand 574 states and 906 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:34,760 INFO L93 Difference]: Finished difference Result 1779 states and 2940 transitions. [2025-03-03 14:14:34,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:34,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 155 [2025-03-03 14:14:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:34,769 INFO L225 Difference]: With dead ends: 1779 [2025-03-03 14:14:34,769 INFO L226 Difference]: Without dead ends: 1297 [2025-03-03 14:14:34,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:34,772 INFO L435 NwaCegarLoop]: 679 mSDtfsCounter, 3234 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3276 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 4233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:34,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3276 Valid, 1752 Invalid, 4233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-03 14:14:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2025-03-03 14:14:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1135. [2025-03-03 14:14:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 868 states have (on average 1.6129032258064515) internal successors, (1400), 908 states have internal predecessors, (1400), 218 states have call successors, (218), 46 states have call predecessors, (218), 48 states have return successors, (222), 211 states have call predecessors, (222), 213 states have call successors, (222) [2025-03-03 14:14:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1840 transitions. [2025-03-03 14:14:34,813 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1840 transitions. Word has length 155 [2025-03-03 14:14:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:34,813 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 1840 transitions. [2025-03-03 14:14:34,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:34,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1840 transitions. [2025-03-03 14:14:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 14:14:34,815 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:34,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:34,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-03 14:14:34,816 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:34,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:34,816 INFO L85 PathProgramCache]: Analyzing trace with hash 674758022, now seen corresponding path program 1 times [2025-03-03 14:14:34,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:34,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777543130] [2025-03-03 14:14:34,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:34,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 14:14:34,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 14:14:34,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:34,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:34,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:34,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777543130] [2025-03-03 14:14:34,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777543130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:34,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:34,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:14:34,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633180105] [2025-03-03 14:14:34,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:34,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:34,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:34,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:34,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:34,934 INFO L87 Difference]: Start difference. First operand 1135 states and 1840 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:37,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:37,020 INFO L93 Difference]: Finished difference Result 3978 states and 6681 transitions. [2025-03-03 14:14:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 156 [2025-03-03 14:14:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:37,037 INFO L225 Difference]: With dead ends: 3978 [2025-03-03 14:14:37,038 INFO L226 Difference]: Without dead ends: 2939 [2025-03-03 14:14:37,043 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:37,043 INFO L435 NwaCegarLoop]: 678 mSDtfsCounter, 3247 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 3350 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 4219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 3350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:37,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3290 Valid, 1765 Invalid, 4219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 3350 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-03 14:14:37,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2025-03-03 14:14:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2512. [2025-03-03 14:14:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 1875 states have (on average 1.6170666666666667) internal successors, (3032), 1970 states have internal predecessors, (3032), 538 states have call successors, (538), 84 states have call predecessors, (538), 98 states have return successors, (581), 533 states have call predecessors, (581), 533 states have call successors, (581) [2025-03-03 14:14:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 4151 transitions. [2025-03-03 14:14:37,144 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 4151 transitions. Word has length 156 [2025-03-03 14:14:37,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:37,145 INFO L471 AbstractCegarLoop]: Abstraction has 2512 states and 4151 transitions. [2025-03-03 14:14:37,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 4151 transitions. [2025-03-03 14:14:37,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-03 14:14:37,147 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:37,148 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:37,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-03 14:14:37,148 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:37,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1396337759, now seen corresponding path program 1 times [2025-03-03 14:14:37,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:37,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021191878] [2025-03-03 14:14:37,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:37,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-03 14:14:37,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-03 14:14:37,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:37,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:37,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021191878] [2025-03-03 14:14:37,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021191878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:37,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:37,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:14:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113717379] [2025-03-03 14:14:37,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:37,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:37,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:37,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:37,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:37,303 INFO L87 Difference]: Start difference. First operand 2512 states and 4151 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:39,311 INFO L93 Difference]: Finished difference Result 9732 states and 16558 transitions. [2025-03-03 14:14:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:39,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 157 [2025-03-03 14:14:39,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:39,346 INFO L225 Difference]: With dead ends: 9732 [2025-03-03 14:14:39,346 INFO L226 Difference]: Without dead ends: 7324 [2025-03-03 14:14:39,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:39,360 INFO L435 NwaCegarLoop]: 684 mSDtfsCounter, 3259 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 3355 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3303 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 4228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 3355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:39,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3303 Valid, 1786 Invalid, 4228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 3355 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-03 14:14:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2025-03-03 14:14:39,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 6067. [2025-03-03 14:14:39,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6067 states, 4431 states have (on average 1.6120514556533514) internal successors, (7143), 4674 states have internal predecessors, (7143), 1418 states have call successors, (1418), 160 states have call predecessors, (1418), 217 states have return successors, (1610), 1423 states have call predecessors, (1610), 1413 states have call successors, (1610) [2025-03-03 14:14:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6067 states to 6067 states and 10171 transitions. [2025-03-03 14:14:39,657 INFO L78 Accepts]: Start accepts. Automaton has 6067 states and 10171 transitions. Word has length 157 [2025-03-03 14:14:39,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:39,657 INFO L471 AbstractCegarLoop]: Abstraction has 6067 states and 10171 transitions. [2025-03-03 14:14:39,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 6067 states and 10171 transitions. [2025-03-03 14:14:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-03 14:14:39,660 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:39,660 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:39,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-03 14:14:39,661 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:39,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:39,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1085655755, now seen corresponding path program 1 times [2025-03-03 14:14:39,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:39,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529057407] [2025-03-03 14:14:39,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:39,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:39,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-03-03 14:14:39,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-03-03 14:14:39,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:39,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:39,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:39,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529057407] [2025-03-03 14:14:39,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529057407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:39,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:39,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:14:39,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597556214] [2025-03-03 14:14:39,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:39,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:39,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:39,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:39,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:39,781 INFO L87 Difference]: Start difference. First operand 6067 states and 10171 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:42,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:42,286 INFO L93 Difference]: Finished difference Result 25514 states and 43868 transitions. [2025-03-03 14:14:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:42,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 158 [2025-03-03 14:14:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:42,366 INFO L225 Difference]: With dead ends: 25514 [2025-03-03 14:14:42,366 INFO L226 Difference]: Without dead ends: 19567 [2025-03-03 14:14:42,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:42,392 INFO L435 NwaCegarLoop]: 690 mSDtfsCounter, 3271 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 3364 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3316 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 4239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 3364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:42,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3316 Valid, 1807 Invalid, 4239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 3364 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-03 14:14:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19567 states. [2025-03-03 14:14:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19567 to 15710. [2025-03-03 14:14:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15710 states, 11291 states have (on average 1.6042865999468603) internal successors, (18114), 11942 states have internal predecessors, (18114), 3902 states have call successors, (3902), 312 states have call predecessors, (3902), 516 states have return successors, (4625), 3945 states have call predecessors, (4625), 3897 states have call successors, (4625) [2025-03-03 14:14:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15710 states to 15710 states and 26641 transitions. [2025-03-03 14:14:43,300 INFO L78 Accepts]: Start accepts. Automaton has 15710 states and 26641 transitions. Word has length 158 [2025-03-03 14:14:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:43,300 INFO L471 AbstractCegarLoop]: Abstraction has 15710 states and 26641 transitions. [2025-03-03 14:14:43,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 15710 states and 26641 transitions. [2025-03-03 14:14:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-03 14:14:43,305 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:43,305 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:43,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-03 14:14:43,305 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:43,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:43,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1160369148, now seen corresponding path program 1 times [2025-03-03 14:14:43,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:43,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767191814] [2025-03-03 14:14:43,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:43,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-03 14:14:43,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-03 14:14:43,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:43,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:43,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:43,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767191814] [2025-03-03 14:14:43,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767191814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:43,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:43,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 14:14:43,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816718706] [2025-03-03 14:14:43,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:43,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:43,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:43,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:43,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:43,463 INFO L87 Difference]: Start difference. First operand 15710 states and 26641 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:47,870 INFO L93 Difference]: Finished difference Result 70580 states and 122340 transitions. [2025-03-03 14:14:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:47,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2025-03-03 14:14:47,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:48,232 INFO L225 Difference]: With dead ends: 70580 [2025-03-03 14:14:48,232 INFO L226 Difference]: Without dead ends: 55022 [2025-03-03 14:14:48,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:48,320 INFO L435 NwaCegarLoop]: 696 mSDtfsCounter, 3283 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3329 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:48,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3329 Valid, 1828 Invalid, 4250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-03 14:14:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55022 states. [2025-03-03 14:14:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55022 to 43009. [2025-03-03 14:14:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43009 states, 30639 states have (on average 1.5976043604556285) internal successors, (48949), 32438 states have internal predecessors, (48949), 11058 states have call successors, (11058), 616 states have call predecessors, (11058), 1311 states have return successors, (13590), 11231 states have call predecessors, (13590), 11053 states have call successors, (13590) [2025-03-03 14:14:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43009 states to 43009 states and 73597 transitions. [2025-03-03 14:14:51,146 INFO L78 Accepts]: Start accepts. Automaton has 43009 states and 73597 transitions. Word has length 159 [2025-03-03 14:14:51,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:51,147 INFO L471 AbstractCegarLoop]: Abstraction has 43009 states and 73597 transitions. [2025-03-03 14:14:51,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:51,148 INFO L276 IsEmpty]: Start isEmpty. Operand 43009 states and 73597 transitions. [2025-03-03 14:14:51,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-03 14:14:51,152 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:51,152 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:51,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-03 14:14:51,152 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:51,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash 801205510, now seen corresponding path program 1 times [2025-03-03 14:14:51,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:51,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128710932] [2025-03-03 14:14:51,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:51,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:51,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-03 14:14:51,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-03 14:14:51,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:51,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:14:51,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:51,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128710932] [2025-03-03 14:14:51,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128710932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:51,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:51,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-03 14:14:51,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486811137] [2025-03-03 14:14:51,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:51,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 14:14:51,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:51,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 14:14:51,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:51,312 INFO L87 Difference]: Start difference. First operand 43009 states and 73597 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:14:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:59,084 INFO L93 Difference]: Finished difference Result 138187 states and 236901 transitions. [2025-03-03 14:14:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-03 14:14:59,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2025-03-03 14:14:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:59,613 INFO L225 Difference]: With dead ends: 138187 [2025-03-03 14:14:59,613 INFO L226 Difference]: Without dead ends: 95394 [2025-03-03 14:14:59,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2025-03-03 14:14:59,767 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 2474 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 5598 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 6147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 5598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:59,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 2972 Invalid, 6147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 5598 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 14:14:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95394 states. [2025-03-03 14:15:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95394 to 92537. [2025-03-03 14:15:05,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92537 states, 66378 states have (on average 1.5962216396999005) internal successors, (105954), 70066 states have internal predecessors, (105954), 23127 states have call successors, (23127), 1384 states have call predecessors, (23127), 3031 states have return successors, (28838), 23640 states have call predecessors, (28838), 23122 states have call successors, (28838) [2025-03-03 14:15:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92537 states to 92537 states and 157919 transitions. [2025-03-03 14:15:05,884 INFO L78 Accepts]: Start accepts. Automaton has 92537 states and 157919 transitions. Word has length 159 [2025-03-03 14:15:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:05,885 INFO L471 AbstractCegarLoop]: Abstraction has 92537 states and 157919 transitions. [2025-03-03 14:15:05,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2025-03-03 14:15:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 92537 states and 157919 transitions. [2025-03-03 14:15:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-03 14:15:05,890 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:05,890 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:05,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-03 14:15:05,890 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:05,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1767334171, now seen corresponding path program 1 times [2025-03-03 14:15:05,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:05,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409866707] [2025-03-03 14:15:05,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:05,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:06,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 14:15:06,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 14:15:06,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:06,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:15:06,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:06,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409866707] [2025-03-03 14:15:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409866707] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:06,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:15:06,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:15:06,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367326411] [2025-03-03 14:15:06,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:06,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:15:06,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:06,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:15:06,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:15:06,395 INFO L87 Difference]: Start difference. First operand 92537 states and 157919 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:15:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:11,838 INFO L93 Difference]: Finished difference Result 185850 states and 317239 transitions. [2025-03-03 14:15:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 14:15:11,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2025-03-03 14:15:11,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:12,399 INFO L225 Difference]: With dead ends: 185850 [2025-03-03 14:15:12,400 INFO L226 Difference]: Without dead ends: 93529 [2025-03-03 14:15:12,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:15:12,845 INFO L435 NwaCegarLoop]: 877 mSDtfsCounter, 0 mSDsluCounter, 4348 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5225 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:12,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5225 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:15:12,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93529 states. [2025-03-03 14:15:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93529 to 93209. [2025-03-03 14:15:17,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93209 states, 66858 states have (on average 1.591941128959885) internal successors, (106434), 70546 states have internal predecessors, (106434), 23127 states have call successors, (23127), 1384 states have call predecessors, (23127), 3223 states have return successors, (29318), 23832 states have call predecessors, (29318), 23122 states have call successors, (29318) [2025-03-03 14:15:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93209 states to 93209 states and 158879 transitions. [2025-03-03 14:15:18,733 INFO L78 Accepts]: Start accepts. Automaton has 93209 states and 158879 transitions. Word has length 165 [2025-03-03 14:15:18,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:18,733 INFO L471 AbstractCegarLoop]: Abstraction has 93209 states and 158879 transitions. [2025-03-03 14:15:18,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 5 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:15:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 93209 states and 158879 transitions. [2025-03-03 14:15:18,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-03 14:15:18,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:18,738 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:18,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-03 14:15:18,738 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:18,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:18,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1917797126, now seen corresponding path program 1 times [2025-03-03 14:15:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:18,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140559072] [2025-03-03 14:15:18,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:18,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-03 14:15:18,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-03 14:15:18,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:18,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-03-03 14:15:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140559072] [2025-03-03 14:15:18,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140559072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:15:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:15:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722263398] [2025-03-03 14:15:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:18,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:18,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:18,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:18,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:15:18,850 INFO L87 Difference]: Start difference. First operand 93209 states and 158879 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-03 14:15:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:24,675 INFO L93 Difference]: Finished difference Result 186204 states and 317505 transitions. [2025-03-03 14:15:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:15:24,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 165 [2025-03-03 14:15:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:25,269 INFO L225 Difference]: With dead ends: 186204 [2025-03-03 14:15:25,269 INFO L226 Difference]: Without dead ends: 93211 [2025-03-03 14:15:25,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:15:25,535 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 3 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:25,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2615 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:25,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93211 states.