./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product28.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_product28.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 bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:14:26,981 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:14:27,028 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:14:27,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:14:27,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:14:27,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:14:27,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:14:27,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:14:27,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:14:27,055 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:14:27,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:14:27,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:14:27,055 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:14:27,055 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:14:27,055 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:14:27,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:14:27,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:14:27,055 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:14:27,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:14:27,057 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:14:27,057 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:14:27,057 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:14:27,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:14:27,058 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:14:27,058 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:14:27,058 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:14:27,058 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:14:27,058 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:14:27,058 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:14:27,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:14:27,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:14:27,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:14:27,059 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 -> bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 [2025-03-03 14:14:27,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:14:27,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:14:27,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:14:27,257 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:14:27,257 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:14:27,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2025-03-03 14:14:28,364 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181bac75b/6690a872e3e84faf8da22901a632645e/FLAGd91c7f3b8 [2025-03-03 14:14:28,710 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:14:28,711 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2025-03-03 14:14:28,728 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181bac75b/6690a872e3e84faf8da22901a632645e/FLAGd91c7f3b8 [2025-03-03 14:14:28,944 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/181bac75b/6690a872e3e84faf8da22901a632645e [2025-03-03 14:14:28,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:14:28,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:14:28,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:14:28,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:14:28,950 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:14:28,950 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:14:28" (1/1) ... [2025-03-03 14:14:28,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2140d6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:28, skipping insertion in model container [2025-03-03 14:14:28,951 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:14:28" (1/1) ... [2025-03-03 14:14:28,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:14:29,334 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_product28.cil.c[63597,63610] [2025-03-03 14:14:29,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:14:29,376 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:14:29,382 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2025-03-03 14:14:29,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [412] [2025-03-03 14:14:29,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [532] [2025-03-03 14:14:29,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [567] [2025-03-03 14:14:29,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [755] [2025-03-03 14:14:29,384 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1426] [2025-03-03 14:14:29,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1518] [2025-03-03 14:14:29,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3108] [2025-03-03 14:14:29,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3117] [2025-03-03 14:14:29,385 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3130] [2025-03-03 14:14:29,454 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_product28.cil.c[63597,63610] [2025-03-03 14:14:29,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:14:29,479 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:14:29,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29 WrapperNode [2025-03-03 14:14:29,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:14:29,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:14:29,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:14:29,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:14:29,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,545 INFO L138 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1163 [2025-03-03 14:14:29,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:14:29,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:14:29,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:14:29,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:14:29,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,559 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,583 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 14:14:29,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,606 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,610 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,623 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:14:29,624 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:14:29,624 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:14:29,624 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:14:29,626 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (1/1) ... [2025-03-03 14:14:29,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:14:29,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:29,651 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 14:14:29,654 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 14:14:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2025-03-03 14:14:29,671 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2025-03-03 14:14:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2025-03-03 14:14:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2025-03-03 14:14:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2025-03-03 14:14:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2025-03-03 14:14:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2025-03-03 14:14:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2025-03-03 14:14:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2025-03-03 14:14:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2025-03-03 14:14:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2025-03-03 14:14:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2025-03-03 14:14:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2025-03-03 14:14:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2025-03-03 14:14:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2025-03-03 14:14:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2025-03-03 14:14:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2025-03-03 14:14:29,673 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2025-03-03 14:14:29,674 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 14:14:29,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2025-03-03 14:14:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:14:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2025-03-03 14:14:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2025-03-03 14:14:29,675 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2025-03-03 14:14:29,675 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2025-03-03 14:14:29,828 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:14:29,830 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:14:29,881 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L529: #res := ~retValue_acc~4; [2025-03-03 14:14:29,906 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L451: #res := ~retValue_acc~2; [2025-03-03 14:14:29,909 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1592: #res := ~retValue_acc~10; [2025-03-03 14:14:29,918 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1765: #res := ~retValue_acc~11; [2025-03-03 14:14:29,989 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2421: #res#1 := ~retValue_acc~21#1; [2025-03-03 14:14:29,989 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1808-1: buttonForFloorIsPressed_#res#1 := buttonForFloorIsPressed_~retValue_acc~13#1; [2025-03-03 14:14:29,995 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L3096: #res := ~retValue_acc~25; [2025-03-03 14:14:30,262 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2331: #res#1 := ~retValue_acc~19#1; [2025-03-03 14:14:30,262 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2302-1: stopRequestedInDirection__wrappee__empty_#res#1 := stopRequestedInDirection__wrappee__empty_~retValue_acc~18#1; [2025-03-03 14:14:30,308 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2466: #res := ~retValue_acc~23; [2025-03-03 14:14:30,317 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L490: #res := ~retValue_acc~3; [2025-03-03 14:14:30,368 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1857-1: isEmpty_#res#1 := isEmpty_~retValue_acc~15#1; [2025-03-03 14:14:30,453 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1937-1: anyStopRequested_#res#1 := anyStopRequested_~retValue_acc~16#1; [2025-03-03 14:14:30,453 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1950-1: isIdle_#res#1 := isIdle_~retValue_acc~17#1; [2025-03-03 14:14:30,507 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1112: #res := ~retValue_acc~8; [2025-03-03 14:14:30,564 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L409-1: main_#res#1 := main_~retValue_acc~1#1; [2025-03-03 14:14:30,564 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L564-1: valid_product_#res#1 := valid_product_~retValue_acc~6#1; [2025-03-03 14:14:30,572 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L872: #res := ~retValue_acc~7; [2025-03-03 14:14:30,574 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1774: #res := ~retValue_acc~12; [2025-03-03 14:14:30,579 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L1423: #res := ~retValue_acc~9; [2025-03-03 14:14:30,667 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L2452-1: stopRequestedAtCurrentFloor_#res#1 := stopRequestedAtCurrentFloor_~retValue_acc~22#1; [2025-03-03 14:14:30,799 INFO L? ?]: Removed 463 outVars from TransFormulas that were not future-live. [2025-03-03 14:14:30,799 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:14:30,823 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:14:30,824 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:14:30,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:14:30 BoogieIcfgContainer [2025-03-03 14:14:30,825 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:14:30,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:14:30,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:14:30,830 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:14:30,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:14:28" (1/3) ... [2025-03-03 14:14:30,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf1a623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:14:30, skipping insertion in model container [2025-03-03 14:14:30,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:14:29" (2/3) ... [2025-03-03 14:14:30,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bf1a623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:14:30, skipping insertion in model container [2025-03-03 14:14:30,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:14:30" (3/3) ... [2025-03-03 14:14:30,832 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2025-03-03 14:14:30,844 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:14:30,849 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec1_product28.cil.c that has 27 procedures, 584 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:14:30,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:14:30,909 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;@39e25b4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:14:30,911 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:14:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 584 states, 454 states have (on average 1.6828193832599119) internal successors, (764), 477 states have internal predecessors, (764), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2025-03-03 14:14:30,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-03 14:14:30,928 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:30,928 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] [2025-03-03 14:14:30,930 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:30,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2065725875, now seen corresponding path program 1 times [2025-03-03 14:14:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20144586] [2025-03-03 14:14:30,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:30,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:31,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-03 14:14:31,075 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 14:14:31,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:31,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:31,333 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 14:14:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:31,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20144586] [2025-03-03 14:14:31,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20144586] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:31,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011572543] [2025-03-03 14:14:31,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:31,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:31,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:31,339 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 14:14:31,340 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 14:14:31,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-03 14:14:31,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 14:14:31,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:31,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:31,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 14:14:31,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:31,670 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 14:14:31,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:31,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011572543] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:31,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2025-03-03 14:14:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161076216] [2025-03-03 14:14:31,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:31,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:14:31,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:31,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:14:31,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:31,689 INFO L87 Difference]: Start difference. First operand has 584 states, 454 states have (on average 1.6828193832599119) internal successors, (764), 477 states have internal predecessors, (764), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-03 14:14:31,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:31,753 INFO L93 Difference]: Finished difference Result 605 states and 998 transitions. [2025-03-03 14:14:31,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:14:31,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 83 [2025-03-03 14:14:31,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:31,766 INFO L225 Difference]: With dead ends: 605 [2025-03-03 14:14:31,766 INFO L226 Difference]: Without dead ends: 576 [2025-03-03 14:14:31,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 14:14:31,774 INFO L435 NwaCegarLoop]: 960 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, 960 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 14:14:31,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-03 14:14:31,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-03-03 14:14:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 448 states have (on average 1.6830357142857142) internal successors, (754), 469 states have internal predecessors, (754), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 953 transitions. [2025-03-03 14:14:31,852 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 953 transitions. Word has length 83 [2025-03-03 14:14:31,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:31,853 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 953 transitions. [2025-03-03 14:14:31,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2025-03-03 14:14:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 953 transitions. [2025-03-03 14:14:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-03-03 14:14:31,857 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:31,857 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] [2025-03-03 14:14:31,868 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 14:14:32,058 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 14:14:32,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:32,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -123156816, now seen corresponding path program 1 times [2025-03-03 14:14:32,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:32,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386796606] [2025-03-03 14:14:32,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:32,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:32,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-03 14:14:32,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-03 14:14:32,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:32,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:32,245 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 14:14:32,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:32,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386796606] [2025-03-03 14:14:32,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386796606] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:32,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40179000] [2025-03-03 14:14:32,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:32,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:32,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:32,249 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 14:14:32,250 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 14:14:32,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-03-03 14:14:32,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-03-03 14:14:32,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:32,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:32,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 1726 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:32,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:32,579 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 14:14:32,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40179000] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:32,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:32,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352933802] [2025-03-03 14:14:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:32,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:32,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:32,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:32,587 INFO L87 Difference]: Start difference. First operand 576 states and 953 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:32,658 INFO L93 Difference]: Finished difference Result 1143 states and 1898 transitions. [2025-03-03 14:14:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2025-03-03 14:14:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:32,662 INFO L225 Difference]: With dead ends: 1143 [2025-03-03 14:14:32,662 INFO L226 Difference]: Without dead ends: 576 [2025-03-03 14:14:32,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 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 14:14:32,666 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 5 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2817 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 14:14:32,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2817 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-03 14:14:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-03-03 14:14:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 448 states have (on average 1.6808035714285714) internal successors, (753), 469 states have internal predecessors, (753), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 952 transitions. [2025-03-03 14:14:32,696 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 952 transitions. Word has length 85 [2025-03-03 14:14:32,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:32,697 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 952 transitions. [2025-03-03 14:14:32,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:32,697 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 952 transitions. [2025-03-03 14:14:32,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-03 14:14:32,701 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:32,701 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] [2025-03-03 14:14:32,710 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 14:14:32,902 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 14:14:32,902 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:32,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:32,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1871276592, now seen corresponding path program 1 times [2025-03-03 14:14:32,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:32,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61327269] [2025-03-03 14:14:32,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:32,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:32,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:14:32,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:14:32,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:32,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:33,069 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 14:14:33,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:33,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61327269] [2025-03-03 14:14:33,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61327269] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:33,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927805874] [2025-03-03 14:14:33,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:33,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:33,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:33,071 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 14:14:33,073 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 14:14:33,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-03 14:14:33,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-03 14:14:33,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:33,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:33,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:33,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:33,395 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 14:14:33,395 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:33,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927805874] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:33,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:33,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:33,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212728963] [2025-03-03 14:14:33,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:33,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:33,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:33,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:33,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:33,397 INFO L87 Difference]: Start difference. First operand 576 states and 952 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:33,453 INFO L93 Difference]: Finished difference Result 1143 states and 1896 transitions. [2025-03-03 14:14:33,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:33,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2025-03-03 14:14:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:33,459 INFO L225 Difference]: With dead ends: 1143 [2025-03-03 14:14:33,460 INFO L226 Difference]: Without dead ends: 576 [2025-03-03 14:14:33,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 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 14:14:33,464 INFO L435 NwaCegarLoop]: 941 mSDtfsCounter, 4 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2817 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 14:14:33,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2817 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-03-03 14:14:33,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2025-03-03 14:14:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 448 states have (on average 1.6785714285714286) internal successors, (752), 469 states have internal predecessors, (752), 102 states have call successors, (102), 26 states have call predecessors, (102), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 951 transitions. [2025-03-03 14:14:33,493 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 951 transitions. Word has length 87 [2025-03-03 14:14:33,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:33,493 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 951 transitions. [2025-03-03 14:14:33,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:33,493 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 951 transitions. [2025-03-03 14:14:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-03 14:14:33,495 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:33,495 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] [2025-03-03 14:14:33,503 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 14:14:33,699 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 14:14:33,699 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:33,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1019140688, now seen corresponding path program 1 times [2025-03-03 14:14:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867359995] [2025-03-03 14:14:33,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:33,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:33,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-03 14:14:33,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-03 14:14:33,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:33,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:33,827 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 14:14:33,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867359995] [2025-03-03 14:14:33,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867359995] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:33,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074320034] [2025-03-03 14:14:33,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:33,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:33,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:33,831 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 14:14:33,832 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 14:14:33,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-03 14:14:34,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-03 14:14:34,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:34,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:34,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:34,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:34,121 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 14:14:34,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074320034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:34,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86848382] [2025-03-03 14:14:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:34,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:34,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:34,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:34,124 INFO L87 Difference]: Start difference. First operand 576 states and 951 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:34,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:34,193 INFO L93 Difference]: Finished difference Result 1150 states and 1903 transitions. [2025-03-03 14:14:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:34,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2025-03-03 14:14:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:34,199 INFO L225 Difference]: With dead ends: 1150 [2025-03-03 14:14:34,199 INFO L226 Difference]: Without dead ends: 585 [2025-03-03 14:14:34,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 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 14:14:34,202 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 13 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2814 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 14:14:34,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2814 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-03-03 14:14:34,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2025-03-03 14:14:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 477 states have internal predecessors, (764), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:34,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 963 transitions. [2025-03-03 14:14:34,234 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 963 transitions. Word has length 89 [2025-03-03 14:14:34,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:34,234 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 963 transitions. [2025-03-03 14:14:34,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 963 transitions. [2025-03-03 14:14:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-03 14:14:34,236 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:34,236 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] [2025-03-03 14:14:34,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:34,437 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 14:14:34,437 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:34,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1891935233, now seen corresponding path program 1 times [2025-03-03 14:14:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:34,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157370930] [2025-03-03 14:14:34,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:34,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:34,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 14:14:34,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 14:14:34,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:34,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:34,541 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 14:14:34,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:34,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157370930] [2025-03-03 14:14:34,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157370930] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:34,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585861070] [2025-03-03 14:14:34,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:34,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:34,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:34,545 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 14:14:34,548 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 14:14:34,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-03 14:14:34,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-03 14:14:34,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:34,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:34,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:34,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:34,799 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 14:14:34,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:34,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585861070] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:34,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:34,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:34,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57224896] [2025-03-03 14:14:34,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:34,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:34,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:34,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:34,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:34,800 INFO L87 Difference]: Start difference. First operand 585 states and 963 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:34,855 INFO L93 Difference]: Finished difference Result 1152 states and 1904 transitions. [2025-03-03 14:14:34,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2025-03-03 14:14:34,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:34,859 INFO L225 Difference]: With dead ends: 1152 [2025-03-03 14:14:34,860 INFO L226 Difference]: Without dead ends: 585 [2025-03-03 14:14:34,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 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 14:14:34,864 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 11 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2814 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 14:14:34,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2814 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-03-03 14:14:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2025-03-03 14:14:34,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6732456140350878) internal successors, (763), 477 states have internal predecessors, (763), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:34,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 962 transitions. [2025-03-03 14:14:34,885 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 962 transitions. Word has length 90 [2025-03-03 14:14:34,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:34,886 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 962 transitions. [2025-03-03 14:14:34,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:34,886 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 962 transitions. [2025-03-03 14:14:34,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-03 14:14:34,887 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:34,887 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] [2025-03-03 14:14:34,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:35,092 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 14:14:35,092 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:35,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:35,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1828184179, now seen corresponding path program 1 times [2025-03-03 14:14:35,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:35,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508718971] [2025-03-03 14:14:35,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:35,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 14:14:35,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 14:14:35,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:35,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:35,177 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 14:14:35,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:35,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508718971] [2025-03-03 14:14:35,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508718971] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:35,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628608835] [2025-03-03 14:14:35,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:35,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:35,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:35,179 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 14:14:35,180 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 14:14:35,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-03 14:14:35,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-03 14:14:35,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:35,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:35,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:35,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:35,442 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 14:14:35,442 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:35,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628608835] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:35,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:35,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:35,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319107080] [2025-03-03 14:14:35,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:35,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:35,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:35,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:35,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:35,443 INFO L87 Difference]: Start difference. First operand 585 states and 962 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:35,494 INFO L93 Difference]: Finished difference Result 1152 states and 1903 transitions. [2025-03-03 14:14:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:35,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2025-03-03 14:14:35,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:35,499 INFO L225 Difference]: With dead ends: 1152 [2025-03-03 14:14:35,499 INFO L226 Difference]: Without dead ends: 585 [2025-03-03 14:14:35,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 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 14:14:35,502 INFO L435 NwaCegarLoop]: 940 mSDtfsCounter, 10 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2814 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 14:14:35,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2814 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:35,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2025-03-03 14:14:35,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2025-03-03 14:14:35,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6710526315789473) internal successors, (762), 477 states have internal predecessors, (762), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 961 transitions. [2025-03-03 14:14:35,531 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 961 transitions. Word has length 91 [2025-03-03 14:14:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:35,532 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 961 transitions. [2025-03-03 14:14:35,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 961 transitions. [2025-03-03 14:14:35,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-03 14:14:35,533 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:35,533 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] [2025-03-03 14:14:35,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:35,733 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 14:14:35,734 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:35,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1498676668, now seen corresponding path program 1 times [2025-03-03 14:14:35,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:35,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697281626] [2025-03-03 14:14:35,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:35,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:35,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 14:14:35,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 14:14:35,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:35,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:35,867 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 14:14:35,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697281626] [2025-03-03 14:14:35,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697281626] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:35,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499984933] [2025-03-03 14:14:35,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:35,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:35,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:35,870 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 14:14:35,871 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 14:14:35,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-03 14:14:36,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-03 14:14:36,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:36,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:36,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:36,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:36,134 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 14:14:36,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499984933] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:36,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:36,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129478479] [2025-03-03 14:14:36,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:36,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:36,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:36,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:36,136 INFO L87 Difference]: Start difference. First operand 585 states and 961 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:36,239 INFO L93 Difference]: Finished difference Result 1178 states and 1950 transitions. [2025-03-03 14:14:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 92 [2025-03-03 14:14:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:36,243 INFO L225 Difference]: With dead ends: 1178 [2025-03-03 14:14:36,244 INFO L226 Difference]: Without dead ends: 600 [2025-03-03 14:14:36,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 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 14:14:36,246 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 76 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2705 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 14:14:36,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 2705 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-03-03 14:14:36,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 585. [2025-03-03 14:14:36,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6600877192982457) internal successors, (757), 477 states have internal predecessors, (757), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 956 transitions. [2025-03-03 14:14:36,262 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 956 transitions. Word has length 92 [2025-03-03 14:14:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:36,262 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 956 transitions. [2025-03-03 14:14:36,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 956 transitions. [2025-03-03 14:14:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 14:14:36,264 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:36,264 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] [2025-03-03 14:14:36,272 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 14:14:36,464 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 14:14:36,464 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:36,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:36,465 INFO L85 PathProgramCache]: Analyzing trace with hash -703933092, now seen corresponding path program 1 times [2025-03-03 14:14:36,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:36,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402864845] [2025-03-03 14:14:36,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:36,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:36,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:14:36,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:14:36,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:36,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:36,594 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 14:14:36,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:36,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402864845] [2025-03-03 14:14:36,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402864845] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:36,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479616313] [2025-03-03 14:14:36,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:36,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:36,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:36,596 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 14:14:36,598 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 14:14:36,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 14:14:36,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 14:14:36,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:36,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:36,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:36,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:36,859 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 14:14:36,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:36,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479616313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:36,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:36,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:36,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867876913] [2025-03-03 14:14:36,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:36,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:36,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:36,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:36,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:36,862 INFO L87 Difference]: Start difference. First operand 585 states and 956 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:36,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:36,967 INFO L93 Difference]: Finished difference Result 1178 states and 1940 transitions. [2025-03-03 14:14:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:36,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2025-03-03 14:14:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:36,971 INFO L225 Difference]: With dead ends: 1178 [2025-03-03 14:14:36,971 INFO L226 Difference]: Without dead ends: 600 [2025-03-03 14:14:36,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 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 14:14:36,974 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 75 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2705 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 14:14:36,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2705 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-03-03 14:14:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 585. [2025-03-03 14:14:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 456 states have (on average 1.6491228070175439) internal successors, (752), 477 states have internal predecessors, (752), 102 states have call successors, (102), 27 states have call predecessors, (102), 26 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 951 transitions. [2025-03-03 14:14:36,992 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 951 transitions. Word has length 94 [2025-03-03 14:14:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:36,992 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 951 transitions. [2025-03-03 14:14:36,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 951 transitions. [2025-03-03 14:14:36,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-03 14:14:36,993 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:36,993 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] [2025-03-03 14:14:37,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:37,197 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 14:14:37,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:37,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1451078820, now seen corresponding path program 1 times [2025-03-03 14:14:37,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:37,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410607287] [2025-03-03 14:14:37,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:37,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:37,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 14:14:37,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 14:14:37,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:37,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:37,304 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 14:14:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410607287] [2025-03-03 14:14:37,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410607287] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:37,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353143118] [2025-03-03 14:14:37,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:37,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:37,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:37,307 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 14:14:37,308 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 14:14:37,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-03 14:14:37,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-03 14:14:37,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:37,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:37,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 1737 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:37,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:37,604 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 14:14:37,604 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353143118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:37,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:37,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3153581] [2025-03-03 14:14:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:37,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:37,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:37,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:37,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:37,606 INFO L87 Difference]: Start difference. First operand 585 states and 951 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:37,747 INFO L93 Difference]: Finished difference Result 1229 states and 2013 transitions. [2025-03-03 14:14:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:37,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2025-03-03 14:14:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:37,751 INFO L225 Difference]: With dead ends: 1229 [2025-03-03 14:14:37,751 INFO L226 Difference]: Without dead ends: 666 [2025-03-03 14:14:37,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 95 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 14:14:37,754 INFO L435 NwaCegarLoop]: 948 mSDtfsCounter, 130 mSDsluCounter, 1788 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 2736 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 14:14:37,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 2736 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2025-03-03 14:14:37,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 636. [2025-03-03 14:14:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 506 states have (on average 1.6541501976284585) internal successors, (837), 527 states have internal predecessors, (837), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:37,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1036 transitions. [2025-03-03 14:14:37,769 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1036 transitions. Word has length 96 [2025-03-03 14:14:37,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:37,769 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1036 transitions. [2025-03-03 14:14:37,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1036 transitions. [2025-03-03 14:14:37,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:14:37,771 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:37,771 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] [2025-03-03 14:14:37,779 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 14:14:37,971 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 14:14:37,972 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:37,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:37,972 INFO L85 PathProgramCache]: Analyzing trace with hash -212362884, now seen corresponding path program 1 times [2025-03-03 14:14:37,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:37,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701557494] [2025-03-03 14:14:37,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:37,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:37,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:14:37,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:14:37,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:37,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:38,077 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 14:14:38,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:38,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701557494] [2025-03-03 14:14:38,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701557494] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655024704] [2025-03-03 14:14:38,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:38,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:38,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:38,079 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 14:14:38,081 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 14:14:38,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:14:38,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:14:38,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:38,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:38,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1738 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:38,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:38,349 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 14:14:38,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655024704] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:38,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:38,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:38,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839701071] [2025-03-03 14:14:38,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:38,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:38,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:38,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:38,352 INFO L87 Difference]: Start difference. First operand 636 states and 1036 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:38,487 INFO L93 Difference]: Finished difference Result 1244 states and 2037 transitions. [2025-03-03 14:14:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2025-03-03 14:14:38,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:38,491 INFO L225 Difference]: With dead ends: 1244 [2025-03-03 14:14:38,491 INFO L226 Difference]: Without dead ends: 666 [2025-03-03 14:14:38,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 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 14:14:38,494 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 124 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 2709 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 14:14:38,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 2709 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2025-03-03 14:14:38,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 636. [2025-03-03 14:14:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 506 states have (on average 1.6442687747035574) internal successors, (832), 527 states have internal predecessors, (832), 102 states have call successors, (102), 28 states have call predecessors, (102), 27 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-03 14:14:38,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1031 transitions. [2025-03-03 14:14:38,512 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1031 transitions. Word has length 97 [2025-03-03 14:14:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:38,513 INFO L471 AbstractCegarLoop]: Abstraction has 636 states and 1031 transitions. [2025-03-03 14:14:38,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1031 transitions. [2025-03-03 14:14:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:14:38,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:38,515 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] [2025-03-03 14:14:38,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:38,720 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 14:14:38,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:38,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1685957240, now seen corresponding path program 1 times [2025-03-03 14:14:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:38,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93943630] [2025-03-03 14:14:38,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:38,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:14:38,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:14:38,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:38,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:38,832 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 14:14:38,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93943630] [2025-03-03 14:14:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93943630] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259728838] [2025-03-03 14:14:38,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:38,835 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 14:14:38,836 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 14:14:38,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:14:39,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:14:39,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:39,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:39,075 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:39,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:39,143 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 14:14:39,144 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:39,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259728838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:39,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:39,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2025-03-03 14:14:39,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644514199] [2025-03-03 14:14:39,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:39,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:39,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:39,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:39,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:14:39,145 INFO L87 Difference]: Start difference. First operand 636 states and 1031 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:39,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:39,261 INFO L93 Difference]: Finished difference Result 1237 states and 2017 transitions. [2025-03-03 14:14:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:39,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2025-03-03 14:14:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:39,267 INFO L225 Difference]: With dead ends: 1237 [2025-03-03 14:14:39,268 INFO L226 Difference]: Without dead ends: 674 [2025-03-03 14:14:39,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 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 14:14:39,270 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 113 mSDsluCounter, 5437 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6358 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 14:14:39,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6358 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2025-03-03 14:14:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 655. [2025-03-03 14:14:39,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 522 states have (on average 1.6436781609195403) internal successors, (858), 545 states have internal predecessors, (858), 103 states have call successors, (103), 28 states have call predecessors, (103), 29 states have return successors, (100), 95 states have call predecessors, (100), 98 states have call successors, (100) [2025-03-03 14:14:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 1061 transitions. [2025-03-03 14:14:39,293 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 1061 transitions. Word has length 97 [2025-03-03 14:14:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:39,293 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 1061 transitions. [2025-03-03 14:14:39,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:39,293 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 1061 transitions. [2025-03-03 14:14:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-03 14:14:39,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:39,294 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] [2025-03-03 14:14:39,302 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 14:14:39,494 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 14:14:39,495 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:39,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:39,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1114706007, now seen corresponding path program 1 times [2025-03-03 14:14:39,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:39,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242314386] [2025-03-03 14:14:39,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:39,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:39,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:14:39,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:14:39,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:39,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:39,554 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 14:14:39,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242314386] [2025-03-03 14:14:39,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242314386] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13864650] [2025-03-03 14:14:39,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:39,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:39,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:39,556 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 14:14:39,558 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 14:14:39,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-03 14:14:39,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-03 14:14:39,806 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:39,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:39,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:39,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:39,858 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 14:14:39,859 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13864650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:39,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:14:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874158140] [2025-03-03 14:14:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:39,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:39,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:39,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:39,861 INFO L87 Difference]: Start difference. First operand 655 states and 1061 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:39,929 INFO L93 Difference]: Finished difference Result 1175 states and 1917 transitions. [2025-03-03 14:14:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:39,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 97 [2025-03-03 14:14:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:39,934 INFO L225 Difference]: With dead ends: 1175 [2025-03-03 14:14:39,934 INFO L226 Difference]: Without dead ends: 679 [2025-03-03 14:14:39,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 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 14:14:39,937 INFO L435 NwaCegarLoop]: 934 mSDtfsCounter, 86 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 5525 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 14:14:39,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 5525 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-03-03 14:14:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 674. [2025-03-03 14:14:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6431226765799256) internal successors, (884), 563 states have internal predecessors, (884), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-03 14:14:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1091 transitions. [2025-03-03 14:14:39,956 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1091 transitions. Word has length 97 [2025-03-03 14:14:39,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:39,957 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1091 transitions. [2025-03-03 14:14:39,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1091 transitions. [2025-03-03 14:14:39,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 14:14:39,959 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:39,959 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] [2025-03-03 14:14:39,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:40,159 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 14:14:40,160 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:40,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash -305488678, now seen corresponding path program 1 times [2025-03-03 14:14:40,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:40,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471224906] [2025-03-03 14:14:40,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:40,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:40,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:14:40,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:14:40,177 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:40,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:40,220 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 14:14:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471224906] [2025-03-03 14:14:40,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471224906] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:40,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780927183] [2025-03-03 14:14:40,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:40,224 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 14:14:40,224 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 14:14:40,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:14:40,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:14:40,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:40,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:40,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:40,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:40,484 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 14:14:40,484 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:40,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780927183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:40,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:40,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-03 14:14:40,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400729813] [2025-03-03 14:14:40,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:40,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:40,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:40,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:40,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:14:40,486 INFO L87 Difference]: Start difference. First operand 674 states and 1091 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:40,523 INFO L93 Difference]: Finished difference Result 1242 states and 2027 transitions. [2025-03-03 14:14:40,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:40,524 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 98 [2025-03-03 14:14:40,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:40,527 INFO L225 Difference]: With dead ends: 1242 [2025-03-03 14:14:40,528 INFO L226 Difference]: Without dead ends: 674 [2025-03-03 14:14:40,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 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 14:14:40,530 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 13 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2783 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 14:14:40,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2783 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2025-03-03 14:14:40,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2025-03-03 14:14:40,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6356877323420074) internal successors, (880), 563 states have internal predecessors, (880), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-03 14:14:40,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1087 transitions. [2025-03-03 14:14:40,548 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1087 transitions. Word has length 98 [2025-03-03 14:14:40,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:40,548 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1087 transitions. [2025-03-03 14:14:40,549 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, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 14:14:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1087 transitions. [2025-03-03 14:14:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 14:14:40,550 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:40,550 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] [2025-03-03 14:14:40,559 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 14:14:40,754 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 14:14:40,754 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:40,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash 519572796, now seen corresponding path program 1 times [2025-03-03 14:14:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873744315] [2025-03-03 14:14:40,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:40,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:40,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:14:40,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:14:40,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:40,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:40,805 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 14:14:40,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:40,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873744315] [2025-03-03 14:14:40,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873744315] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:40,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144320655] [2025-03-03 14:14:40,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:40,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:40,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:40,807 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 14:14:40,809 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 14:14:40,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:14:41,054 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:14:41,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:41,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:41,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:41,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:41,110 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 14:14:41,110 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:41,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144320655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:41,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:41,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-03 14:14:41,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276323285] [2025-03-03 14:14:41,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:41,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:41,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:41,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:41,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:41,111 INFO L87 Difference]: Start difference. First operand 674 states and 1087 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:41,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:41,181 INFO L93 Difference]: Finished difference Result 1205 states and 1964 transitions. [2025-03-03 14:14:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2025-03-03 14:14:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:41,186 INFO L225 Difference]: With dead ends: 1205 [2025-03-03 14:14:41,186 INFO L226 Difference]: Without dead ends: 709 [2025-03-03 14:14:41,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 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 14:14:41,189 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 95 mSDsluCounter, 4558 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 5486 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 14:14:41,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 5486 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:41,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2025-03-03 14:14:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 674. [2025-03-03 14:14:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6356877323420074) internal successors, (880), 563 states have internal predecessors, (880), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-03 14:14:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1087 transitions. [2025-03-03 14:14:41,211 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1087 transitions. Word has length 98 [2025-03-03 14:14:41,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:41,211 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1087 transitions. [2025-03-03 14:14:41,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1087 transitions. [2025-03-03 14:14:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-03 14:14:41,213 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:41,213 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] [2025-03-03 14:14:41,221 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 14:14:41,413 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 14:14:41,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:41,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1233757717, now seen corresponding path program 1 times [2025-03-03 14:14:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:41,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276196175] [2025-03-03 14:14:41,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:41,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:41,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:14:41,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:14:41,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:41,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:41,477 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 14:14:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276196175] [2025-03-03 14:14:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276196175] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091995134] [2025-03-03 14:14:41,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:41,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:41,479 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 14:14:41,480 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 14:14:41,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-03 14:14:41,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-03 14:14:41,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:41,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:41,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:41,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:41,748 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 14:14:41,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091995134] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:41,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:41,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:14:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677126743] [2025-03-03 14:14:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:41,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:41,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:41,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:41,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:41,750 INFO L87 Difference]: Start difference. First operand 674 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:41,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:41,859 INFO L93 Difference]: Finished difference Result 1190 states and 1938 transitions. [2025-03-03 14:14:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:41,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2025-03-03 14:14:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:41,863 INFO L225 Difference]: With dead ends: 1190 [2025-03-03 14:14:41,863 INFO L226 Difference]: Without dead ends: 694 [2025-03-03 14:14:41,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 94 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 14:14:41,865 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 113 mSDsluCounter, 5415 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 6332 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 14:14:41,865 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 6332 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-03-03 14:14:41,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 674. [2025-03-03 14:14:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6356877323420074) internal successors, (880), 563 states have internal predecessors, (880), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-03 14:14:41,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1087 transitions. [2025-03-03 14:14:41,881 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1087 transitions. Word has length 98 [2025-03-03 14:14:41,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:41,881 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1087 transitions. [2025-03-03 14:14:41,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1087 transitions. [2025-03-03 14:14:41,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-03 14:14:41,882 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:41,883 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] [2025-03-03 14:14:41,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-03 14:14:42,083 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 14:14:42,083 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:42,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:42,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1527720096, now seen corresponding path program 1 times [2025-03-03 14:14:42,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:42,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016325438] [2025-03-03 14:14:42,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:42,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 14:14:42,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 14:14:42,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:42,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:42,137 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 14:14:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016325438] [2025-03-03 14:14:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016325438] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100285200] [2025-03-03 14:14:42,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:42,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:42,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:42,140 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 14:14:42,141 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 14:14:42,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-03 14:14:42,361 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-03 14:14:42,361 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:42,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:42,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 1731 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 14:14:42,368 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:42,421 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 14:14:42,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:42,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100285200] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:42,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:42,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:14:42,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914977408] [2025-03-03 14:14:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:42,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:42,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:42,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:42,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:42,422 INFO L87 Difference]: Start difference. First operand 674 states and 1087 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:42,523 INFO L93 Difference]: Finished difference Result 1190 states and 1939 transitions. [2025-03-03 14:14:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:14:42,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 99 [2025-03-03 14:14:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:42,527 INFO L225 Difference]: With dead ends: 1190 [2025-03-03 14:14:42,527 INFO L226 Difference]: Without dead ends: 694 [2025-03-03 14:14:42,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 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 14:14:42,530 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 121 mSDsluCounter, 5405 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 6322 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 14:14:42,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 6322 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2025-03-03 14:14:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 674. [2025-03-03 14:14:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 538 states have (on average 1.6356877323420074) internal successors, (880), 563 states have internal predecessors, (880), 104 states have call successors, (104), 28 states have call predecessors, (104), 31 states have return successors, (103), 96 states have call predecessors, (103), 99 states have call successors, (103) [2025-03-03 14:14:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1087 transitions. [2025-03-03 14:14:42,548 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1087 transitions. Word has length 99 [2025-03-03 14:14:42,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:42,549 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1087 transitions. [2025-03-03 14:14:42,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:42,549 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1087 transitions. [2025-03-03 14:14:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-03 14:14:42,550 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:42,550 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] [2025-03-03 14:14:42,558 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 14:14:42,751 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 14:14:42,752 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:42,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:42,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1196167466, now seen corresponding path program 1 times [2025-03-03 14:14:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:42,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216232413] [2025-03-03 14:14:42,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:42,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:42,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-03 14:14:42,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-03 14:14:42,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:42,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:42,814 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 14:14:42,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:42,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216232413] [2025-03-03 14:14:42,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216232413] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:42,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056328908] [2025-03-03 14:14:42,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:42,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:42,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:42,816 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 14:14:42,819 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 14:14:42,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-03 14:14:43,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-03 14:14:43,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:43,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:43,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:14:43,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:43,337 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 14:14:43,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:43,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056328908] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:43,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:43,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2025-03-03 14:14:43,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471138888] [2025-03-03 14:14:43,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:43,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:43,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:43,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:43,338 INFO L87 Difference]: Start difference. First operand 674 states and 1087 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:45,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:45,519 INFO L93 Difference]: Finished difference Result 2234 states and 3699 transitions. [2025-03-03 14:14:45,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:45,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2025-03-03 14:14:45,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:45,527 INFO L225 Difference]: With dead ends: 2234 [2025-03-03 14:14:45,528 INFO L226 Difference]: Without dead ends: 1743 [2025-03-03 14:14:45,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:45,531 INFO L435 NwaCegarLoop]: 613 mSDtfsCounter, 4594 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4778 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 926 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:45,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4778 Valid, 1537 Invalid, 4061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [926 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-03-03 14:14:45,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2025-03-03 14:14:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1556. [2025-03-03 14:14:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1231 states have (on average 1.6645004061738424) internal successors, (2049), 1274 states have internal predecessors, (2049), 259 states have call successors, (259), 60 states have call predecessors, (259), 65 states have return successors, (268), 236 states have call predecessors, (268), 254 states have call successors, (268) [2025-03-03 14:14:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2576 transitions. [2025-03-03 14:14:45,607 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2576 transitions. Word has length 100 [2025-03-03 14:14:45,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:45,608 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 2576 transitions. [2025-03-03 14:14:45,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2025-03-03 14:14:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2576 transitions. [2025-03-03 14:14:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-03 14:14:45,611 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:45,611 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:45,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-03-03 14:14:45,811 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 14:14:45,812 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:45,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1341111972, now seen corresponding path program 1 times [2025-03-03 14:14:45,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:45,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908005146] [2025-03-03 14:14:45,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:45,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:45,829 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:14:45,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:14:45,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:45,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:14:45,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908005146] [2025-03-03 14:14:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908005146] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252173041] [2025-03-03 14:14:45,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:45,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:45,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:45,885 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 14:14:45,886 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 14:14:46,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-03 14:14:46,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-03 14:14:46,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:46,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:46,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:46,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:46,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:46,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252173041] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:46,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:46,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992153828] [2025-03-03 14:14:46,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:46,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:46,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:46,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:46,226 INFO L87 Difference]: Start difference. First operand 1556 states and 2576 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:46,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:46,575 INFO L93 Difference]: Finished difference Result 2953 states and 4986 transitions. [2025-03-03 14:14:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:46,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2025-03-03 14:14:46,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:46,585 INFO L225 Difference]: With dead ends: 2953 [2025-03-03 14:14:46,585 INFO L226 Difference]: Without dead ends: 1580 [2025-03-03 14:14:46,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:46,591 INFO L435 NwaCegarLoop]: 921 mSDtfsCounter, 882 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:46,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 2371 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2025-03-03 14:14:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2025-03-03 14:14:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1252 states have (on average 1.665335463258786) internal successors, (2085), 1295 states have internal predecessors, (2085), 259 states have call successors, (259), 63 states have call predecessors, (259), 68 states have return successors, (271), 236 states have call predecessors, (271), 254 states have call successors, (271) [2025-03-03 14:14:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2615 transitions. [2025-03-03 14:14:46,675 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2615 transitions. Word has length 153 [2025-03-03 14:14:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:46,676 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2615 transitions. [2025-03-03 14:14:46,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2615 transitions. [2025-03-03 14:14:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-03-03 14:14:46,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:46,679 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:46,688 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 14:14:46,880 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 14:14:46,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:46,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:46,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1061231943, now seen corresponding path program 1 times [2025-03-03 14:14:46,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:46,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435344413] [2025-03-03 14:14:46,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:46,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-03 14:14:46,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-03 14:14:46,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:46,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:14:46,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:46,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435344413] [2025-03-03 14:14:46,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435344413] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:46,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059525130] [2025-03-03 14:14:46,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:46,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:46,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:46,955 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 14:14:46,956 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 14:14:47,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-03-03 14:14:47,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-03-03 14:14:47,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:47,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:47,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 2109 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 14:14:47,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-03-03 14:14:47,334 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:47,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059525130] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:47,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:47,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-03-03 14:14:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021833758] [2025-03-03 14:14:47,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:47,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:14:47,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:47,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:14:47,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:47,335 INFO L87 Difference]: Start difference. First operand 1580 states and 2615 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-03 14:14:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:49,315 INFO L93 Difference]: Finished difference Result 4264 states and 7090 transitions. [2025-03-03 14:14:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 14:14:49,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2025-03-03 14:14:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:49,332 INFO L225 Difference]: With dead ends: 4264 [2025-03-03 14:14:49,333 INFO L226 Difference]: Without dead ends: 2707 [2025-03-03 14:14:49,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-03 14:14:49,340 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 1757 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 5194 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 5457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 5194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:49,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 2051 Invalid, 5457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 5194 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-03 14:14:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2025-03-03 14:14:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2488. [2025-03-03 14:14:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 1948 states have (on average 1.6421971252566736) internal successors, (3199), 2000 states have internal predecessors, (3199), 425 states have call successors, (425), 95 states have call predecessors, (425), 114 states have return successors, (473), 403 states have call predecessors, (473), 420 states have call successors, (473) [2025-03-03 14:14:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 4097 transitions. [2025-03-03 14:14:49,447 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 4097 transitions. Word has length 154 [2025-03-03 14:14:49,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:49,447 INFO L471 AbstractCegarLoop]: Abstraction has 2488 states and 4097 transitions. [2025-03-03 14:14:49,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 5 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2025-03-03 14:14:49,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 4097 transitions. [2025-03-03 14:14:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-03 14:14:49,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:49,451 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 14:14:49,460 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 14:14:49,652 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 14:14:49,652 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:49,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:49,652 INFO L85 PathProgramCache]: Analyzing trace with hash -697307815, now seen corresponding path program 1 times [2025-03-03 14:14:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765435923] [2025-03-03 14:14:49,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:49,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:49,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-03 14:14:49,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-03 14:14:49,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:49,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-03 14:14:49,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765435923] [2025-03-03 14:14:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765435923] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477557604] [2025-03-03 14:14:49,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:49,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:49,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:49,725 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 14:14:49,727 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 14:14:49,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-03 14:14:49,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-03 14:14:49,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:49,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:49,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:50,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:50,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:50,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477557604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:50,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:50,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:50,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226788405] [2025-03-03 14:14:50,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:50,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:50,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:50,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:50,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:50,080 INFO L87 Difference]: Start difference. First operand 2488 states and 4097 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:50,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:50,469 INFO L93 Difference]: Finished difference Result 4841 states and 8126 transitions. [2025-03-03 14:14:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:50,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2025-03-03 14:14:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:50,479 INFO L225 Difference]: With dead ends: 4841 [2025-03-03 14:14:50,479 INFO L226 Difference]: Without dead ends: 2536 [2025-03-03 14:14:50,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:50,489 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 869 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:50,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 2368 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2025-03-03 14:14:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2536. [2025-03-03 14:14:50,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 1990 states have (on average 1.6437185929648241) internal successors, (3271), 2042 states have internal predecessors, (3271), 425 states have call successors, (425), 101 states have call predecessors, (425), 120 states have return successors, (478), 403 states have call predecessors, (478), 420 states have call successors, (478) [2025-03-03 14:14:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 4174 transitions. [2025-03-03 14:14:50,570 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 4174 transitions. Word has length 155 [2025-03-03 14:14:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:50,571 INFO L471 AbstractCegarLoop]: Abstraction has 2536 states and 4174 transitions. [2025-03-03 14:14:50,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 4174 transitions. [2025-03-03 14:14:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2025-03-03 14:14:50,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:50,575 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:50,584 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 14:14:50,775 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 14:14:50,776 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:50,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash -284025091, now seen corresponding path program 1 times [2025-03-03 14:14:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:50,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424023991] [2025-03-03 14:14:50,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:50,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-03 14:14:50,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-03 14:14:50,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:50,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:50,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:50,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424023991] [2025-03-03 14:14:50,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424023991] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:50,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334744508] [2025-03-03 14:14:50,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:50,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:50,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:50,853 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 14:14:50,854 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 14:14:50,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 157 statements into 1 equivalence classes. [2025-03-03 14:14:51,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 157 of 157 statements. [2025-03-03 14:14:51,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:51,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:51,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:51,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:51,208 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334744508] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:51,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:51,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:51,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001325570] [2025-03-03 14:14:51,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:51,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:51,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:51,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:51,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:51,209 INFO L87 Difference]: Start difference. First operand 2536 states and 4174 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:51,578 INFO L93 Difference]: Finished difference Result 4937 states and 8264 transitions. [2025-03-03 14:14:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:51,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2025-03-03 14:14:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:51,592 INFO L225 Difference]: With dead ends: 4937 [2025-03-03 14:14:51,592 INFO L226 Difference]: Without dead ends: 2584 [2025-03-03 14:14:51,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:51,604 INFO L435 NwaCegarLoop]: 915 mSDtfsCounter, 859 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:51,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 2365 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:51,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2025-03-03 14:14:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 2584. [2025-03-03 14:14:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2032 states have (on average 1.6451771653543308) internal successors, (3343), 2084 states have internal predecessors, (3343), 425 states have call successors, (425), 107 states have call predecessors, (425), 126 states have return successors, (483), 403 states have call predecessors, (483), 420 states have call successors, (483) [2025-03-03 14:14:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 4251 transitions. [2025-03-03 14:14:51,690 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 4251 transitions. Word has length 157 [2025-03-03 14:14:51,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:51,691 INFO L471 AbstractCegarLoop]: Abstraction has 2584 states and 4251 transitions. [2025-03-03 14:14:51,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 4251 transitions. [2025-03-03 14:14:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-03 14:14:51,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:51,695 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:51,703 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 14:14:51,895 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 14:14:51,895 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:51,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:51,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1243532499, now seen corresponding path program 1 times [2025-03-03 14:14:51,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:51,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276753623] [2025-03-03 14:14:51,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:51,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:51,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-03 14:14:51,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-03 14:14:51,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:51,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-03 14:14:51,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:51,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276753623] [2025-03-03 14:14:51,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276753623] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:51,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265556740] [2025-03-03 14:14:51,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:51,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:51,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:51,966 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 14:14:51,968 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 14:14:52,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-03 14:14:52,254 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-03 14:14:52,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:52,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:52,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:52,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:52,360 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:52,360 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:52,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265556740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:52,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:52,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:52,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693989899] [2025-03-03 14:14:52,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:52,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:52,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:52,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:52,362 INFO L87 Difference]: Start difference. First operand 2584 states and 4251 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:52,763 INFO L93 Difference]: Finished difference Result 5033 states and 8402 transitions. [2025-03-03 14:14:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:52,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2025-03-03 14:14:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:52,778 INFO L225 Difference]: With dead ends: 5033 [2025-03-03 14:14:52,778 INFO L226 Difference]: Without dead ends: 2632 [2025-03-03 14:14:52,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:52,787 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 849 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:52,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2362 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2025-03-03 14:14:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2632. [2025-03-03 14:14:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2632 states, 2074 states have (on average 1.646576663452266) internal successors, (3415), 2126 states have internal predecessors, (3415), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2025-03-03 14:14:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 4328 transitions. [2025-03-03 14:14:52,867 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 4328 transitions. Word has length 159 [2025-03-03 14:14:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:52,867 INFO L471 AbstractCegarLoop]: Abstraction has 2632 states and 4328 transitions. [2025-03-03 14:14:52,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 4328 transitions. [2025-03-03 14:14:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-03 14:14:52,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:52,872 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:52,880 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 14:14:53,072 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 14:14:53,073 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:53,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:53,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1159781853, now seen corresponding path program 1 times [2025-03-03 14:14:53,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:53,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483924238] [2025-03-03 14:14:53,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:53,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:53,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-03 14:14:53,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-03 14:14:53,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:53,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:53,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483924238] [2025-03-03 14:14:53,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483924238] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:53,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128705289] [2025-03-03 14:14:53,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:53,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:53,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:53,139 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 14:14:53,141 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 14:14:53,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-03 14:14:53,406 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-03 14:14:53,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:53,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:53,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 2112 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:14:53,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:53,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:53,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:53,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128705289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:53,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:53,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2025-03-03 14:14:53,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830731279] [2025-03-03 14:14:53,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:53,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:14:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:53,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:14:53,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:53,547 INFO L87 Difference]: Start difference. First operand 2632 states and 4328 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-03 14:14:53,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:53,909 INFO L93 Difference]: Finished difference Result 2744 states and 4515 transitions. [2025-03-03 14:14:53,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:53,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2025-03-03 14:14:53,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:53,926 INFO L225 Difference]: With dead ends: 2744 [2025-03-03 14:14:53,926 INFO L226 Difference]: Without dead ends: 2729 [2025-03-03 14:14:53,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 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 14:14:53,928 INFO L435 NwaCegarLoop]: 935 mSDtfsCounter, 886 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:53,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 2406 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:14:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2025-03-03 14:14:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2641. [2025-03-03 14:14:53,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2641 states, 2083 states have (on average 1.6437830052808449) internal successors, (3424), 2135 states have internal predecessors, (3424), 425 states have call successors, (425), 113 states have call predecessors, (425), 132 states have return successors, (488), 403 states have call predecessors, (488), 420 states have call successors, (488) [2025-03-03 14:14:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2641 states to 2641 states and 4337 transitions. [2025-03-03 14:14:54,003 INFO L78 Accepts]: Start accepts. Automaton has 2641 states and 4337 transitions. Word has length 161 [2025-03-03 14:14:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:54,003 INFO L471 AbstractCegarLoop]: Abstraction has 2641 states and 4337 transitions. [2025-03-03 14:14:54,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-03 14:14:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2641 states and 4337 transitions. [2025-03-03 14:14:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-03 14:14:54,007 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:54,007 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:54,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-03-03 14:14:54,207 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 14:14:54,207 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:54,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash 553760443, now seen corresponding path program 1 times [2025-03-03 14:14:54,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297142517] [2025-03-03 14:14:54,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:54,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 14:14:54,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 14:14:54,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:54,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:54,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:54,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297142517] [2025-03-03 14:14:54,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297142517] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:54,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405478049] [2025-03-03 14:14:54,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:54,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:54,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:54,274 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:54,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-03 14:14:54,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-03 14:14:54,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-03 14:14:54,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:54,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:54,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 14:14:54,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:54,639 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:54,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405478049] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:54,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:54,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2025-03-03 14:14:54,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61789324] [2025-03-03 14:14:54,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:54,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:14:54,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:54,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:14:54,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:54,640 INFO L87 Difference]: Start difference. First operand 2641 states and 4337 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:54,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:54,917 INFO L93 Difference]: Finished difference Result 2841 states and 4623 transitions. [2025-03-03 14:14:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:14:54,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2025-03-03 14:14:54,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:54,929 INFO L225 Difference]: With dead ends: 2841 [2025-03-03 14:14:54,929 INFO L226 Difference]: Without dead ends: 2826 [2025-03-03 14:14:54,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:54,932 INFO L435 NwaCegarLoop]: 936 mSDtfsCounter, 866 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3681 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:54,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 3681 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 14:14:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2025-03-03 14:14:54,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2805. [2025-03-03 14:14:54,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2215 states have (on average 1.637020316027088) internal successors, (3626), 2267 states have internal predecessors, (3626), 441 states have call successors, (441), 131 states have call predecessors, (441), 148 states have return successors, (507), 417 states have call predecessors, (507), 436 states have call successors, (507) [2025-03-03 14:14:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4574 transitions. [2025-03-03 14:14:55,009 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4574 transitions. Word has length 167 [2025-03-03 14:14:55,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:55,010 INFO L471 AbstractCegarLoop]: Abstraction has 2805 states and 4574 transitions. [2025-03-03 14:14:55,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-03 14:14:55,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4574 transitions. [2025-03-03 14:14:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-03-03 14:14:55,014 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:55,014 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:55,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:55,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:55,217 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:55,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1495404564, now seen corresponding path program 1 times [2025-03-03 14:14:55,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:55,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772433180] [2025-03-03 14:14:55,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:55,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:55,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-03 14:14:55,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-03 14:14:55,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:55,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:55,345 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:55,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:55,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772433180] [2025-03-03 14:14:55,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772433180] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:55,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865680395] [2025-03-03 14:14:55,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:55,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:55,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:55,347 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:55,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-03 14:14:55,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-03-03 14:14:55,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-03-03 14:14:55,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:55,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:55,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 2164 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:55,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-03 14:14:55,703 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:55,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865680395] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:55,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:55,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-03-03 14:14:55,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683614632] [2025-03-03 14:14:55,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:55,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:55,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:55,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:55,704 INFO L87 Difference]: Start difference. First operand 2805 states and 4574 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:55,822 INFO L93 Difference]: Finished difference Result 5584 states and 9118 transitions. [2025-03-03 14:14:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:55,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 177 [2025-03-03 14:14:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:55,837 INFO L225 Difference]: With dead ends: 5584 [2025-03-03 14:14:55,837 INFO L226 Difference]: Without dead ends: 2780 [2025-03-03 14:14:55,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 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 14:14:55,844 INFO L435 NwaCegarLoop]: 931 mSDtfsCounter, 7 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2786 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 14:14:55,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2786 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2025-03-03 14:14:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2780. [2025-03-03 14:14:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2780 states, 2193 states have (on average 1.6361149110807114) internal successors, (3588), 2243 states have internal predecessors, (3588), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2025-03-03 14:14:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2780 states to 2780 states and 4532 transitions. [2025-03-03 14:14:55,916 INFO L78 Accepts]: Start accepts. Automaton has 2780 states and 4532 transitions. Word has length 177 [2025-03-03 14:14:55,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:55,916 INFO L471 AbstractCegarLoop]: Abstraction has 2780 states and 4532 transitions. [2025-03-03 14:14:55,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2780 states and 4532 transitions. [2025-03-03 14:14:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2025-03-03 14:14:55,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:55,921 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:55,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:56,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-03 14:14:56,125 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:56,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:56,125 INFO L85 PathProgramCache]: Analyzing trace with hash -402356936, now seen corresponding path program 1 times [2025-03-03 14:14:56,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:56,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921969170] [2025-03-03 14:14:56,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:56,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-03 14:14:56,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-03 14:14:56,144 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:56,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:14:56,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921969170] [2025-03-03 14:14:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921969170] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454875746] [2025-03-03 14:14:56,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:56,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:56,242 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:56,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-03 14:14:56,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 178 statements into 1 equivalence classes. [2025-03-03 14:14:56,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 178 of 178 statements. [2025-03-03 14:14:56,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:56,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:56,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:14:56,527 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-03 14:14:56,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:56,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454875746] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:56,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:56,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2025-03-03 14:14:56,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639953176] [2025-03-03 14:14:56,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:56,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:56,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:56,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:56,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-03 14:14:56,547 INFO L87 Difference]: Start difference. First operand 2780 states and 4532 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:56,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:56,626 INFO L93 Difference]: Finished difference Result 5514 states and 9011 transitions. [2025-03-03 14:14:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:14:56,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2025-03-03 14:14:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:56,638 INFO L225 Difference]: With dead ends: 5514 [2025-03-03 14:14:56,638 INFO L226 Difference]: Without dead ends: 2798 [2025-03-03 14:14:56,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 177 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 14:14:56,645 INFO L435 NwaCegarLoop]: 923 mSDtfsCounter, 7 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2756 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 14:14:56,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2756 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2025-03-03 14:14:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2025-03-03 14:14:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2211 states have (on average 1.6318407960199004) internal successors, (3608), 2261 states have internal predecessors, (3608), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2025-03-03 14:14:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4552 transitions. [2025-03-03 14:14:56,719 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4552 transitions. Word has length 178 [2025-03-03 14:14:56,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:56,719 INFO L471 AbstractCegarLoop]: Abstraction has 2798 states and 4552 transitions. [2025-03-03 14:14:56,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:56,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4552 transitions. [2025-03-03 14:14:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-03-03 14:14:56,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:56,724 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:56,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:56,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-03 14:14:56,926 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:56,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash -927349427, now seen corresponding path program 1 times [2025-03-03 14:14:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928981724] [2025-03-03 14:14:56,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:56,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-03 14:14:56,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-03 14:14:56,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:56,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:14:57,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:57,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928981724] [2025-03-03 14:14:57,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928981724] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:57,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932350859] [2025-03-03 14:14:57,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:57,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:57,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:57,062 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:57,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-03 14:14:57,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 179 statements into 1 equivalence classes. [2025-03-03 14:14:57,345 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 179 of 179 statements. [2025-03-03 14:14:57,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:57,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:57,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 2167 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-03 14:14:57,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:57,370 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932350859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:57,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2025-03-03 14:14:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136882576] [2025-03-03 14:14:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:57,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:57,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:57,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:57,372 INFO L87 Difference]: Start difference. First operand 2798 states and 4552 transitions. Second operand has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:57,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:57,466 INFO L93 Difference]: Finished difference Result 5565 states and 9068 transitions. [2025-03-03 14:14:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:57,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 179 [2025-03-03 14:14:57,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:57,480 INFO L225 Difference]: With dead ends: 5565 [2025-03-03 14:14:57,480 INFO L226 Difference]: Without dead ends: 2798 [2025-03-03 14:14:57,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 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 14:14:57,488 INFO L435 NwaCegarLoop]: 949 mSDtfsCounter, 119 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 5568 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 14:14:57,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 5568 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:57,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2025-03-03 14:14:57,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2777. [2025-03-03 14:14:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2190 states have (on average 1.6319634703196346) internal successors, (3574), 2240 states have internal predecessors, (3574), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2025-03-03 14:14:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 4518 transitions. [2025-03-03 14:14:57,567 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 4518 transitions. Word has length 179 [2025-03-03 14:14:57,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:57,567 INFO L471 AbstractCegarLoop]: Abstraction has 2777 states and 4518 transitions. [2025-03-03 14:14:57,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:57,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 4518 transitions. [2025-03-03 14:14:57,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2025-03-03 14:14:57,572 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:57,572 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:57,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:57,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-03 14:14:57,773 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:57,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:57,773 INFO L85 PathProgramCache]: Analyzing trace with hash 537015033, now seen corresponding path program 1 times [2025-03-03 14:14:57,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:57,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669038068] [2025-03-03 14:14:57,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:57,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:57,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:14:57,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:14:57,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:57,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:57,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669038068] [2025-03-03 14:14:57,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669038068] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:14:57,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894717386] [2025-03-03 14:14:57,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:57,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:14:57,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:14:57,879 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:14:57,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-03 14:14:58,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 181 statements into 1 equivalence classes. [2025-03-03 14:14:58,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 181 of 181 statements. [2025-03-03 14:14:58,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:58,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:58,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 2173 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:14:58,173 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:14:58,192 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:14:58,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:14:58,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894717386] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:58,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:14:58,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-03 14:14:58,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767235601] [2025-03-03 14:14:58,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:58,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:58,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:58,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:58,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:14:58,194 INFO L87 Difference]: Start difference. First operand 2777 states and 4518 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:58,300 INFO L93 Difference]: Finished difference Result 5547 states and 9038 transitions. [2025-03-03 14:14:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:58,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 181 [2025-03-03 14:14:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:58,310 INFO L225 Difference]: With dead ends: 5547 [2025-03-03 14:14:58,310 INFO L226 Difference]: Without dead ends: 2801 [2025-03-03 14:14:58,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 181 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 14:14:58,317 INFO L435 NwaCegarLoop]: 914 mSDtfsCounter, 128 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:14:58,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2665 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:58,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2025-03-03 14:14:58,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2777. [2025-03-03 14:14:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2777 states, 2190 states have (on average 1.6315068493150684) internal successors, (3573), 2240 states have internal predecessors, (3573), 440 states have call successors, (440), 131 states have call predecessors, (440), 146 states have return successors, (504), 416 states have call predecessors, (504), 435 states have call successors, (504) [2025-03-03 14:14:58,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2777 states to 2777 states and 4517 transitions. [2025-03-03 14:14:58,388 INFO L78 Accepts]: Start accepts. Automaton has 2777 states and 4517 transitions. Word has length 181 [2025-03-03 14:14:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:58,388 INFO L471 AbstractCegarLoop]: Abstraction has 2777 states and 4517 transitions. [2025-03-03 14:14:58,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:58,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2777 states and 4517 transitions. [2025-03-03 14:14:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-03-03 14:14:58,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:58,391 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:58,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-03-03 14:14:58,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-03 14:14:58,592 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:58,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash -777883393, now seen corresponding path program 1 times [2025-03-03 14:14:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:58,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233182176] [2025-03-03 14:14:58,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:58,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 182 statements into 1 equivalence classes. [2025-03-03 14:14:58,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 182 of 182 statements. [2025-03-03 14:14:58,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:58,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:14:58,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:58,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233182176] [2025-03-03 14:14:58,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233182176] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:58,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:58,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 14:14:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965467445] [2025-03-03 14:14:58,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:58,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:14:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:58,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:14:58,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 14:14:58,667 INFO L87 Difference]: Start difference. First operand 2777 states and 4517 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:58,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:58,741 INFO L93 Difference]: Finished difference Result 5482 states and 8947 transitions. [2025-03-03 14:14:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:14:58,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2025-03-03 14:14:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:58,757 INFO L225 Difference]: With dead ends: 5482 [2025-03-03 14:14:58,757 INFO L226 Difference]: Without dead ends: 2737 [2025-03-03 14:14:58,764 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 14:14:58,764 INFO L435 NwaCegarLoop]: 929 mSDtfsCounter, 8 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2783 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 14:14:58,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2783 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:58,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2025-03-03 14:14:58,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2737. [2025-03-03 14:14:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2153 states have (on average 1.630283325592197) internal successors, (3510), 2201 states have internal predecessors, (3510), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2025-03-03 14:14:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 4450 transitions. [2025-03-03 14:14:58,910 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 4450 transitions. Word has length 182 [2025-03-03 14:14:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:58,910 INFO L471 AbstractCegarLoop]: Abstraction has 2737 states and 4450 transitions. [2025-03-03 14:14:58,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-03-03 14:14:58,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 4450 transitions. [2025-03-03 14:14:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-03-03 14:14:58,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:58,914 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:58,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-03 14:14:58,915 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:58,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:58,915 INFO L85 PathProgramCache]: Analyzing trace with hash 518566916, now seen corresponding path program 1 times [2025-03-03 14:14:58,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:58,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760179591] [2025-03-03 14:14:58,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:58,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:58,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 183 statements into 1 equivalence classes. [2025-03-03 14:14:58,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 183 of 183 statements. [2025-03-03 14:14:58,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:58,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-03 14:14:59,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760179591] [2025-03-03 14:14:59,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760179591] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:59,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:59,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-03 14:14:59,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987484929] [2025-03-03 14:14:59,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:59,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:14:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:59,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:14:59,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-03 14:14:59,047 INFO L87 Difference]: Start difference. First operand 2737 states and 4450 transitions. Second operand has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:59,141 INFO L93 Difference]: Finished difference Result 5385 states and 8786 transitions. [2025-03-03 14:14:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 14:14:59,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 183 [2025-03-03 14:14:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:59,155 INFO L225 Difference]: With dead ends: 5385 [2025-03-03 14:14:59,155 INFO L226 Difference]: Without dead ends: 2723 [2025-03-03 14:14:59,163 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 14:14:59,164 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 88 mSDsluCounter, 4482 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 5394 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 14:14:59,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 5394 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:14:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2025-03-03 14:14:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2723. [2025-03-03 14:14:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2139 states have (on average 1.6292660121552127) internal successors, (3485), 2187 states have internal predecessors, (3485), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2025-03-03 14:14:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 4425 transitions. [2025-03-03 14:14:59,236 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 4425 transitions. Word has length 183 [2025-03-03 14:14:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:59,236 INFO L471 AbstractCegarLoop]: Abstraction has 2723 states and 4425 transitions. [2025-03-03 14:14:59,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 4425 transitions. [2025-03-03 14:14:59,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-03-03 14:14:59,239 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:59,239 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:59,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-03 14:14:59,239 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:59,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:59,240 INFO L85 PathProgramCache]: Analyzing trace with hash 234792096, now seen corresponding path program 1 times [2025-03-03 14:14:59,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:59,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936741957] [2025-03-03 14:14:59,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:59,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:59,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-03 14:14:59,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-03 14:14:59,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:59,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:14:59,472 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-03 14:14:59,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:14:59,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936741957] [2025-03-03 14:14:59,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936741957] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:14:59,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:14:59,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:14:59,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904784213] [2025-03-03 14:14:59,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:14:59,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:14:59,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:14:59,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:14:59,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:14:59,474 INFO L87 Difference]: Start difference. First operand 2723 states and 4425 transitions. Second operand has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:14:59,636 INFO L93 Difference]: Finished difference Result 5412 states and 8814 transitions. [2025-03-03 14:14:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 14:14:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 184 [2025-03-03 14:14:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:14:59,648 INFO L225 Difference]: With dead ends: 5412 [2025-03-03 14:14:59,648 INFO L226 Difference]: Without dead ends: 2714 [2025-03-03 14:14:59,656 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 14:14:59,656 INFO L435 NwaCegarLoop]: 872 mSDtfsCounter, 45 mSDsluCounter, 6929 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 7801 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 14:14:59,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 7801 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:14:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2025-03-03 14:14:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2714. [2025-03-03 14:14:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2130 states have (on average 1.6291079812206573) internal successors, (3470), 2178 states have internal predecessors, (3470), 439 states have call successors, (439), 131 states have call predecessors, (439), 144 states have return successors, (501), 415 states have call predecessors, (501), 434 states have call successors, (501) [2025-03-03 14:14:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 4410 transitions. [2025-03-03 14:14:59,727 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 4410 transitions. Word has length 184 [2025-03-03 14:14:59,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:14:59,728 INFO L471 AbstractCegarLoop]: Abstraction has 2714 states and 4410 transitions. [2025-03-03 14:14:59,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2025-03-03 14:14:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 4410 transitions. [2025-03-03 14:14:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2025-03-03 14:14:59,731 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:14:59,731 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:14:59,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-03 14:14:59,731 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:14:59,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:14:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash -243762776, now seen corresponding path program 1 times [2025-03-03 14:14:59,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:14:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045231855] [2025-03-03 14:14:59,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:14:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:14:59,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 185 statements into 1 equivalence classes. [2025-03-03 14:14:59,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 185 of 185 statements. [2025-03-03 14:14:59,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:14:59,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:15:00,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045231855] [2025-03-03 14:15:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045231855] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824650799] [2025-03-03 14:15:00,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:00,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:00,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:00,054 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:00,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-03 14:15:00,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 185 statements into 1 equivalence classes. [2025-03-03 14:15:00,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 185 of 185 statements. [2025-03-03 14:15:00,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:00,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:00,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 14:15:00,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 14:15:00,552 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:00,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824650799] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:00,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:00,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-03-03 14:15:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694520281] [2025-03-03 14:15:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:00,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:15:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:00,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:15:00,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:15:00,556 INFO L87 Difference]: Start difference. First operand 2714 states and 4410 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-03 14:15:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:01,618 INFO L93 Difference]: Finished difference Result 5422 states and 8857 transitions. [2025-03-03 14:15:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:15:01,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 185 [2025-03-03 14:15:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:01,629 INFO L225 Difference]: With dead ends: 5422 [2025-03-03 14:15:01,629 INFO L226 Difference]: Without dead ends: 2808 [2025-03-03 14:15:01,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:15:01,635 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 2015 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2120 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:01,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2120 Valid, 1069 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-03 14:15:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2025-03-03 14:15:01,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2636. [2025-03-03 14:15:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2028 states have (on average 1.613905325443787) internal successors, (3273), 2090 states have internal predecessors, (3273), 471 states have call successors, (471), 123 states have call predecessors, (471), 136 states have return successors, (520), 444 states have call predecessors, (520), 466 states have call successors, (520) [2025-03-03 14:15:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 4264 transitions. [2025-03-03 14:15:01,720 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 4264 transitions. Word has length 185 [2025-03-03 14:15:01,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:01,720 INFO L471 AbstractCegarLoop]: Abstraction has 2636 states and 4264 transitions. [2025-03-03 14:15:01,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 6 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2025-03-03 14:15:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 4264 transitions. [2025-03-03 14:15:01,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2025-03-03 14:15:01,723 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:01,723 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:01,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-03-03 14:15:01,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:01,924 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:01,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:01,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1110815001, now seen corresponding path program 1 times [2025-03-03 14:15:01,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:01,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675930522] [2025-03-03 14:15:01,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:01,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:01,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 185 statements into 1 equivalence classes. [2025-03-03 14:15:01,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 185 of 185 statements. [2025-03-03 14:15:01,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:01,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-03-03 14:15:02,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675930522] [2025-03-03 14:15:02,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675930522] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:02,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411074589] [2025-03-03 14:15:02,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:02,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:02,319 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:02,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-03 14:15:02,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 185 statements into 1 equivalence classes. [2025-03-03 14:15:02,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 185 of 185 statements. [2025-03-03 14:15:02,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:02,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:02,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-03 14:15:02,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-03 14:15:02,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411074589] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2025-03-03 14:15:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146915828] [2025-03-03 14:15:02,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:02,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:15:02,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:02,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:15:02,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2025-03-03 14:15:02,729 INFO L87 Difference]: Start difference. First operand 2636 states and 4264 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2025-03-03 14:15:04,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:04,851 INFO L93 Difference]: Finished difference Result 9008 states and 14831 transitions. [2025-03-03 14:15:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-03 14:15:04,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 185 [2025-03-03 14:15:04,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:04,875 INFO L225 Difference]: With dead ends: 9008 [2025-03-03 14:15:04,875 INFO L226 Difference]: Without dead ends: 6472 [2025-03-03 14:15:04,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2025-03-03 14:15:04,886 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 2405 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 4861 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2490 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 5396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 4861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:04,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2490 Valid, 2848 Invalid, 5396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [535 Valid, 4861 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-03 14:15:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2025-03-03 14:15:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 6030. [2025-03-03 14:15:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6030 states, 4641 states have (on average 1.6248653307476837) internal successors, (7541), 4784 states have internal predecessors, (7541), 1061 states have call successors, (1061), 268 states have call predecessors, (1061), 327 states have return successors, (1262), 1021 states have call predecessors, (1262), 1056 states have call successors, (1262) [2025-03-03 14:15:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6030 states to 6030 states and 9864 transitions. [2025-03-03 14:15:05,167 INFO L78 Accepts]: Start accepts. Automaton has 6030 states and 9864 transitions. Word has length 185 [2025-03-03 14:15:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:05,168 INFO L471 AbstractCegarLoop]: Abstraction has 6030 states and 9864 transitions. [2025-03-03 14:15:05,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2025-03-03 14:15:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 6030 states and 9864 transitions. [2025-03-03 14:15:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-03-03 14:15:05,171 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:05,171 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:05,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-03-03 14:15:05,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-03 14:15:05,372 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:05,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash 841630957, now seen corresponding path program 1 times [2025-03-03 14:15:05,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874111412] [2025-03-03 14:15:05,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:05,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-03 14:15:05,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-03 14:15:05,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:05,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:15:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874111412] [2025-03-03 14:15:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874111412] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226872693] [2025-03-03 14:15:05,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:05,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:05,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:05,761 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:05,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-03 14:15:05,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-03-03 14:15:06,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-03-03 14:15:06,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:06,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:06,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-03 14:15:06,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:15:06,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:06,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226872693] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2025-03-03 14:15:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641466544] [2025-03-03 14:15:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:06,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 14:15:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:06,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 14:15:06,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:15:06,214 INFO L87 Difference]: Start difference. First operand 6030 states and 9864 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-03 14:15:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:08,054 INFO L93 Difference]: Finished difference Result 13050 states and 21531 transitions. [2025-03-03 14:15:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 14:15:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 187 [2025-03-03 14:15:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:08,089 INFO L225 Difference]: With dead ends: 13050 [2025-03-03 14:15:08,089 INFO L226 Difference]: Without dead ends: 7120 [2025-03-03 14:15:08,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2025-03-03 14:15:08,106 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 2150 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 3508 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 4005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 3508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:08,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 2113 Invalid, 4005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 3508 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-03 14:15:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2025-03-03 14:15:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 6305. [2025-03-03 14:15:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6305 states, 4842 states have (on average 1.6171003717472119) internal successors, (7830), 5003 states have internal predecessors, (7830), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 365 states have return successors, (1395), 1062 states have call predecessors, (1395), 1092 states have call successors, (1395) [2025-03-03 14:15:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6305 states to 6305 states and 10322 transitions. [2025-03-03 14:15:08,373 INFO L78 Accepts]: Start accepts. Automaton has 6305 states and 10322 transitions. Word has length 187 [2025-03-03 14:15:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:08,373 INFO L471 AbstractCegarLoop]: Abstraction has 6305 states and 10322 transitions. [2025-03-03 14:15:08,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-03 14:15:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 6305 states and 10322 transitions. [2025-03-03 14:15:08,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-03 14:15:08,376 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:08,376 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:08,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-03 14:15:08,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:08,577 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:08,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash -942807105, now seen corresponding path program 1 times [2025-03-03 14:15:08,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:08,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385508923] [2025-03-03 14:15:08,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:08,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:08,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-03 14:15:08,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-03 14:15:08,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:08,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:15:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385508923] [2025-03-03 14:15:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385508923] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933422610] [2025-03-03 14:15:08,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:08,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:08,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:08,899 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:08,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-03 14:15:09,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-03 14:15:09,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-03 14:15:09,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:09,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:09,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 2194 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:15:09,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 14:15:09,229 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:09,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933422610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:09,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:09,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2025-03-03 14:15:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661512891] [2025-03-03 14:15:09,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:09,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:15:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:09,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:15:09,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:15:09,230 INFO L87 Difference]: Start difference. First operand 6305 states and 10322 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-03 14:15:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:09,717 INFO L93 Difference]: Finished difference Result 15696 states and 25976 transitions. [2025-03-03 14:15:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:15:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 192 [2025-03-03 14:15:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:09,760 INFO L225 Difference]: With dead ends: 15696 [2025-03-03 14:15:09,760 INFO L226 Difference]: Without dead ends: 9495 [2025-03-03 14:15:09,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:15:09,786 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 806 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:09,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2462 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:09,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9495 states. [2025-03-03 14:15:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9495 to 6293. [2025-03-03 14:15:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6293 states, 4836 states have (on average 1.6166253101736974) internal successors, (7818), 4991 states have internal predecessors, (7818), 1097 states have call successors, (1097), 283 states have call predecessors, (1097), 359 states have return successors, (1350), 1062 states have call predecessors, (1350), 1092 states have call successors, (1350) [2025-03-03 14:15:10,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 10265 transitions. [2025-03-03 14:15:10,137 INFO L78 Accepts]: Start accepts. Automaton has 6293 states and 10265 transitions. Word has length 192 [2025-03-03 14:15:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:10,137 INFO L471 AbstractCegarLoop]: Abstraction has 6293 states and 10265 transitions. [2025-03-03 14:15:10,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-03-03 14:15:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6293 states and 10265 transitions. [2025-03-03 14:15:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-03 14:15:10,140 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:10,140 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:10,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-03 14:15:10,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:10,340 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:10,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1651419712, now seen corresponding path program 1 times [2025-03-03 14:15:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:10,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273688977] [2025-03-03 14:15:10,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:10,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:10,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-03 14:15:10,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-03 14:15:10,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:10,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:15:10,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:10,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273688977] [2025-03-03 14:15:10,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273688977] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:10,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969625950] [2025-03-03 14:15:10,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:10,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:10,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:10,580 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:10,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-03 14:15:10,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-03 14:15:10,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-03 14:15:10,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:10,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:10,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 2193 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-03 14:15:10,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:15:10,943 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:10,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969625950] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:10,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2025-03-03 14:15:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717035055] [2025-03-03 14:15:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:10,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:10,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:10,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:15:10,944 INFO L87 Difference]: Start difference. First operand 6293 states and 10265 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-03-03 14:15:12,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:12,348 INFO L93 Difference]: Finished difference Result 19193 states and 31596 transitions. [2025-03-03 14:15:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:15:12,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2025-03-03 14:15:12,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:12,402 INFO L225 Difference]: With dead ends: 19193 [2025-03-03 14:15:12,402 INFO L226 Difference]: Without dead ends: 12992 [2025-03-03 14:15:12,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:15:12,425 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 2032 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:12,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 340 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 14:15:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12992 states. [2025-03-03 14:15:12,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12992 to 12990. [2025-03-03 14:15:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12990 states, 9984 states have (on average 1.6059695512820513) internal successors, (16034), 10327 states have internal predecessors, (16034), 2250 states have call successors, (2250), 559 states have call predecessors, (2250), 755 states have return successors, (2967), 2191 states have call predecessors, (2967), 2245 states have call successors, (2967) [2025-03-03 14:15:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12990 states to 12990 states and 21251 transitions. [2025-03-03 14:15:12,952 INFO L78 Accepts]: Start accepts. Automaton has 12990 states and 21251 transitions. Word has length 192 [2025-03-03 14:15:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:12,953 INFO L471 AbstractCegarLoop]: Abstraction has 12990 states and 21251 transitions. [2025-03-03 14:15:12,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 4 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-03-03 14:15:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 12990 states and 21251 transitions. [2025-03-03 14:15:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2025-03-03 14:15:12,958 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:12,958 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:12,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-03-03 14:15:13,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-03-03 14:15:13,158 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:13,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1339232577, now seen corresponding path program 1 times [2025-03-03 14:15:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:13,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192748622] [2025-03-03 14:15:13,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:13,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 192 statements into 1 equivalence classes. [2025-03-03 14:15:13,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 192 of 192 statements. [2025-03-03 14:15:13,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:13,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-03-03 14:15:13,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192748622] [2025-03-03 14:15:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192748622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:13,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:15:13,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-03 14:15:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066187333] [2025-03-03 14:15:13,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:13,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:15:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:13,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:15:13,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:15:13,323 INFO L87 Difference]: Start difference. First operand 12990 states and 21251 transitions. Second operand has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-03-03 14:15:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:13,868 INFO L93 Difference]: Finished difference Result 19055 states and 31131 transitions. [2025-03-03 14:15:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:15:13,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2025-03-03 14:15:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:13,905 INFO L225 Difference]: With dead ends: 19055 [2025-03-03 14:15:13,906 INFO L226 Difference]: Without dead ends: 6151 [2025-03-03 14:15:13,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:15:13,946 INFO L435 NwaCegarLoop]: 873 mSDtfsCounter, 31 mSDsluCounter, 6936 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 7809 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:13,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 7809 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:15:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6151 states. [2025-03-03 14:15:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6151 to 6151. [2025-03-03 14:15:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6151 states, 4740 states have (on average 1.609704641350211) internal successors, (7630), 4894 states have internal predecessors, (7630), 1051 states have call successors, (1051), 283 states have call predecessors, (1051), 359 states have return successors, (1305), 1017 states have call predecessors, (1305), 1047 states have call successors, (1305) [2025-03-03 14:15:14,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 9986 transitions. [2025-03-03 14:15:14,264 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 9986 transitions. Word has length 192 [2025-03-03 14:15:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:14,264 INFO L471 AbstractCegarLoop]: Abstraction has 6151 states and 9986 transitions. [2025-03-03 14:15:14,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-03-03 14:15:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 9986 transitions. [2025-03-03 14:15:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-03-03 14:15:14,266 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:14,267 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:14,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-03 14:15:14,267 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:14,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash -345828486, now seen corresponding path program 1 times [2025-03-03 14:15:14,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:14,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011837731] [2025-03-03 14:15:14,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:14,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-03 14:15:14,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-03 14:15:14,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:14,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 14:15:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011837731] [2025-03-03 14:15:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011837731] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447338320] [2025-03-03 14:15:14,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:14,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:14,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:14,502 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:14,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-03-03 14:15:14,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 193 statements into 1 equivalence classes. [2025-03-03 14:15:14,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 193 of 193 statements. [2025-03-03 14:15:14,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:14,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:14,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 2195 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 14:15:14,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 14:15:14,842 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:14,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447338320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:14,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:14,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2025-03-03 14:15:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931872703] [2025-03-03 14:15:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:14,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:15:14,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:14,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:15:14,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:15:14,843 INFO L87 Difference]: Start difference. First operand 6151 states and 9986 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2025-03-03 14:15:15,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:15,023 INFO L93 Difference]: Finished difference Result 6213 states and 10066 transitions. [2025-03-03 14:15:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:15:15,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 193 [2025-03-03 14:15:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:15,047 INFO L225 Difference]: With dead ends: 6213 [2025-03-03 14:15:15,047 INFO L226 Difference]: Without dead ends: 6199 [2025-03-03 14:15:15,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:15:15,050 INFO L435 NwaCegarLoop]: 886 mSDtfsCounter, 0 mSDsluCounter, 2643 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:15,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3529 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6199 states. [2025-03-03 14:15:15,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6199 to 6199. [2025-03-03 14:15:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6199 states, 4788 states have (on average 1.60359231411863) internal successors, (7678), 4942 states have internal predecessors, (7678), 1051 states have call successors, (1051), 283 states have call predecessors, (1051), 359 states have return successors, (1305), 1017 states have call predecessors, (1305), 1047 states have call successors, (1305) [2025-03-03 14:15:15,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 10034 transitions. [2025-03-03 14:15:15,262 INFO L78 Accepts]: Start accepts. Automaton has 6199 states and 10034 transitions. Word has length 193 [2025-03-03 14:15:15,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:15,262 INFO L471 AbstractCegarLoop]: Abstraction has 6199 states and 10034 transitions. [2025-03-03 14:15:15,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2025-03-03 14:15:15,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6199 states and 10034 transitions. [2025-03-03 14:15:15,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2025-03-03 14:15:15,265 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:15,265 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:15,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-03-03 14:15:15,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-03 14:15:15,466 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:15,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash -237319867, now seen corresponding path program 1 times [2025-03-03 14:15:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:15,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181950106] [2025-03-03 14:15:15,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:15,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 236 statements into 1 equivalence classes. [2025-03-03 14:15:15,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 236 of 236 statements. [2025-03-03 14:15:15,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:15,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:15,725 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-03 14:15:15,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181950106] [2025-03-03 14:15:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181950106] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4534549] [2025-03-03 14:15:15,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:15,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:15,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:15,727 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:15,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-03-03 14:15:15,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 236 statements into 1 equivalence classes. [2025-03-03 14:15:16,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 236 of 236 statements. [2025-03-03 14:15:16,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:16,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:16,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 14:15:16,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-03-03 14:15:16,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:15:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-03-03 14:15:16,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4534549] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:15:16,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:15:16,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22 [2025-03-03 14:15:16,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25733037] [2025-03-03 14:15:16,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:15:16,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 14:15:16,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:16,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 14:15:16,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2025-03-03 14:15:16,763 INFO L87 Difference]: Start difference. First operand 6199 states and 10034 transitions. Second operand has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2025-03-03 14:15:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:31,388 INFO L93 Difference]: Finished difference Result 56466 states and 95391 transitions. [2025-03-03 14:15:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-03-03 14:15:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) Word has length 236 [2025-03-03 14:15:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:31,637 INFO L225 Difference]: With dead ends: 56466 [2025-03-03 14:15:31,637 INFO L226 Difference]: Without dead ends: 50353 [2025-03-03 14:15:31,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 481 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1060, Invalid=8060, Unknown=0, NotChecked=0, Total=9120 [2025-03-03 14:15:31,716 INFO L435 NwaCegarLoop]: 1834 mSDtfsCounter, 18151 mSDsluCounter, 16087 mSDsCounter, 0 mSdLazyCounter, 32206 mSolverCounterSat, 7360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18151 SdHoareTripleChecker+Valid, 17921 SdHoareTripleChecker+Invalid, 39566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7360 IncrementalHoareTripleChecker+Valid, 32206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:31,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18151 Valid, 17921 Invalid, 39566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7360 Valid, 32206 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2025-03-03 14:15:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50353 states. [2025-03-03 14:15:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50353 to 47339. [2025-03-03 14:15:34,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47339 states, 35784 states have (on average 1.5795886429689248) internal successors, (56524), 37092 states have internal predecessors, (56524), 8766 states have call successors, (8766), 1667 states have call predecessors, (8766), 2788 states have return successors, (13820), 9015 states have call predecessors, (13820), 8762 states have call successors, (13820) [2025-03-03 14:15:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47339 states to 47339 states and 79110 transitions. [2025-03-03 14:15:34,384 INFO L78 Accepts]: Start accepts. Automaton has 47339 states and 79110 transitions. Word has length 236 [2025-03-03 14:15:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:34,384 INFO L471 AbstractCegarLoop]: Abstraction has 47339 states and 79110 transitions. [2025-03-03 14:15:34,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.590909090909092) internal successors, (321), 18 states have internal predecessors, (321), 10 states have call successors, (65), 6 states have call predecessors, (65), 13 states have return successors, (65), 14 states have call predecessors, (65), 9 states have call successors, (65) [2025-03-03 14:15:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 47339 states and 79110 transitions. [2025-03-03 14:15:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2025-03-03 14:15:34,414 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:34,415 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:34,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-03-03 14:15:34,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-03 14:15:34,615 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:34,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1840981294, now seen corresponding path program 1 times [2025-03-03 14:15:34,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:34,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744882511] [2025-03-03 14:15:34,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:34,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:34,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 239 statements into 1 equivalence classes. [2025-03-03 14:15:34,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 239 of 239 statements. [2025-03-03 14:15:34,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:34,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2025-03-03 14:15:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744882511] [2025-03-03 14:15:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744882511] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:34,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:15:34,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-03 14:15:34,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744753835] [2025-03-03 14:15:34,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:34,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 14:15:34,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:34,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 14:15:34,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-03 14:15:34,746 INFO L87 Difference]: Start difference. First operand 47339 states and 79110 transitions. Second operand has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-03-03 14:15:37,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:37,185 INFO L93 Difference]: Finished difference Result 75771 states and 126025 transitions. [2025-03-03 14:15:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:15:37,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 239 [2025-03-03 14:15:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:37,361 INFO L225 Difference]: With dead ends: 75771 [2025-03-03 14:15:37,361 INFO L226 Difference]: Without dead ends: 28536 [2025-03-03 14:15:37,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:15:37,565 INFO L435 NwaCegarLoop]: 874 mSDtfsCounter, 41 mSDsluCounter, 5192 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:37,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6066 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28536 states. [2025-03-03 14:15:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28536 to 28536. [2025-03-03 14:15:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28536 states, 21718 states have (on average 1.5880836172759922) internal successors, (34490), 22550 states have internal predecessors, (34490), 5058 states have call successors, (5058), 1116 states have call predecessors, (5058), 1759 states have return successors, (7484), 5105 states have call predecessors, (7484), 5054 states have call successors, (7484) [2025-03-03 14:15:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28536 states to 28536 states and 47032 transitions. [2025-03-03 14:15:39,554 INFO L78 Accepts]: Start accepts. Automaton has 28536 states and 47032 transitions. Word has length 239 [2025-03-03 14:15:39,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:39,554 INFO L471 AbstractCegarLoop]: Abstraction has 28536 states and 47032 transitions. [2025-03-03 14:15:39,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2025-03-03 14:15:39,554 INFO L276 IsEmpty]: Start isEmpty. Operand 28536 states and 47032 transitions. [2025-03-03 14:15:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2025-03-03 14:15:39,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:39,570 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:39,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-03 14:15:39,570 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:39,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:39,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2137949042, now seen corresponding path program 1 times [2025-03-03 14:15:39,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:39,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815550020] [2025-03-03 14:15:39,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:39,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:39,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 239 statements into 1 equivalence classes. [2025-03-03 14:15:39,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 239 of 239 statements. [2025-03-03 14:15:39,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:39,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:39,699 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2025-03-03 14:15:39,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:39,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815550020] [2025-03-03 14:15:39,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815550020] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:39,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226938607] [2025-03-03 14:15:39,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:39,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:39,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:39,702 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:39,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-03-03 14:15:39,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 239 statements into 1 equivalence classes. [2025-03-03 14:15:39,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 239 of 239 statements. [2025-03-03 14:15:39,987 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:39,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:39,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 14:15:39,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-03 14:15:40,023 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226938607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:40,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:40,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2025-03-03 14:15:40,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328604464] [2025-03-03 14:15:40,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:40,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:40,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:40,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:40,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:15:40,024 INFO L87 Difference]: Start difference. First operand 28536 states and 47032 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:15:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:40,662 INFO L93 Difference]: Finished difference Result 34723 states and 57054 transitions. [2025-03-03 14:15:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 14:15:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 239 [2025-03-03 14:15:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:40,736 INFO L225 Difference]: With dead ends: 34723 [2025-03-03 14:15:40,737 INFO L226 Difference]: Without dead ends: 13812 [2025-03-03 14:15:40,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:15:40,797 INFO L435 NwaCegarLoop]: 871 mSDtfsCounter, 1 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:40,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2598 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13812 states. [2025-03-03 14:15:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13812 to 13812. [2025-03-03 14:15:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13812 states, 10567 states have (on average 1.5883410617961577) internal successors, (16784), 10967 states have internal predecessors, (16784), 2399 states have call successors, (2399), 562 states have call predecessors, (2399), 845 states have return successors, (3327), 2390 states have call predecessors, (3327), 2395 states have call successors, (3327) [2025-03-03 14:15:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13812 states to 13812 states and 22510 transitions. [2025-03-03 14:15:41,561 INFO L78 Accepts]: Start accepts. Automaton has 13812 states and 22510 transitions. Word has length 239 [2025-03-03 14:15:41,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:41,562 INFO L471 AbstractCegarLoop]: Abstraction has 13812 states and 22510 transitions. [2025-03-03 14:15:41,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2025-03-03 14:15:41,562 INFO L276 IsEmpty]: Start isEmpty. Operand 13812 states and 22510 transitions. [2025-03-03 14:15:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2025-03-03 14:15:41,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:41,568 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:41,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-03-03 14:15:41,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:41,769 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:41,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1661589482, now seen corresponding path program 1 times [2025-03-03 14:15:41,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:41,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649780822] [2025-03-03 14:15:41,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:41,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 243 statements into 1 equivalence classes. [2025-03-03 14:15:41,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 243 of 243 statements. [2025-03-03 14:15:41,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:41,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2025-03-03 14:15:42,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649780822] [2025-03-03 14:15:42,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649780822] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:42,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348788675] [2025-03-03 14:15:42,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:42,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:42,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:42,018 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:42,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-03-03 14:15:42,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 243 statements into 1 equivalence classes. [2025-03-03 14:15:42,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 243 of 243 statements. [2025-03-03 14:15:42,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:42,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:42,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:15:42,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-03-03 14:15:42,357 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348788675] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2025-03-03 14:15:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950569305] [2025-03-03 14:15:42,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:42,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 14:15:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:42,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 14:15:42,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:15:42,358 INFO L87 Difference]: Start difference. First operand 13812 states and 22510 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-03 14:15:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:42,950 INFO L93 Difference]: Finished difference Result 27572 states and 45140 transitions. [2025-03-03 14:15:42,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 14:15:42,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) Word has length 243 [2025-03-03 14:15:42,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:43,023 INFO L225 Difference]: With dead ends: 27572 [2025-03-03 14:15:43,023 INFO L226 Difference]: Without dead ends: 13912 [2025-03-03 14:15:43,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:15:43,066 INFO L435 NwaCegarLoop]: 875 mSDtfsCounter, 0 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4368 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:43,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4368 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13912 states. [2025-03-03 14:15:44,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13912 to 13912. [2025-03-03 14:15:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13912 states, 10647 states have (on average 1.5839203531511223) internal successors, (16864), 11047 states have internal predecessors, (16864), 2399 states have call successors, (2399), 562 states have call predecessors, (2399), 865 states have return successors, (3347), 2410 states have call predecessors, (3347), 2395 states have call successors, (3347) [2025-03-03 14:15:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13912 states to 13912 states and 22610 transitions. [2025-03-03 14:15:44,309 INFO L78 Accepts]: Start accepts. Automaton has 13912 states and 22610 transitions. Word has length 243 [2025-03-03 14:15:44,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:44,309 INFO L471 AbstractCegarLoop]: Abstraction has 13912 states and 22610 transitions. [2025-03-03 14:15:44,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 2 states have call successors, (27) [2025-03-03 14:15:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 13912 states and 22610 transitions. [2025-03-03 14:15:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2025-03-03 14:15:44,318 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:44,318 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:44,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2025-03-03 14:15:44,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:44,519 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:44,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash 45657181, now seen corresponding path program 1 times [2025-03-03 14:15:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936639185] [2025-03-03 14:15:44,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:44,537 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 246 statements into 1 equivalence classes. [2025-03-03 14:15:44,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 246 of 246 statements. [2025-03-03 14:15:44,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:44,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:44,929 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-03-03 14:15:44,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:44,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936639185] [2025-03-03 14:15:44,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936639185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:44,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137742868] [2025-03-03 14:15:44,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:44,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:44,932 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:44,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-03-03 14:15:45,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 246 statements into 1 equivalence classes. [2025-03-03 14:15:45,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 246 of 246 statements. [2025-03-03 14:15:45,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:45,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:45,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:15:45,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-03-03 14:15:45,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137742868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:45,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2025-03-03 14:15:45,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153777399] [2025-03-03 14:15:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:45,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:45,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:45,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:45,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-03 14:15:45,281 INFO L87 Difference]: Start difference. First operand 13912 states and 22610 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-03-03 14:15:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:46,514 INFO L93 Difference]: Finished difference Result 28124 states and 46002 transitions. [2025-03-03 14:15:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:15:46,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 246 [2025-03-03 14:15:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:46,596 INFO L225 Difference]: With dead ends: 28124 [2025-03-03 14:15:46,597 INFO L226 Difference]: Without dead ends: 14120 [2025-03-03 14:15:46,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2025-03-03 14:15:46,653 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 10 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:46,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2540 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14120 states. [2025-03-03 14:15:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14120 to 14120. [2025-03-03 14:15:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14120 states, 10829 states have (on average 1.5440022162711238) internal successors, (16720), 11229 states have internal predecessors, (16720), 2399 states have call successors, (2399), 588 states have call predecessors, (2399), 891 states have return successors, (3393), 2410 states have call predecessors, (3393), 2395 states have call successors, (3393) [2025-03-03 14:15:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14120 states to 14120 states and 22512 transitions. [2025-03-03 14:15:47,568 INFO L78 Accepts]: Start accepts. Automaton has 14120 states and 22512 transitions. Word has length 246 [2025-03-03 14:15:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:47,569 INFO L471 AbstractCegarLoop]: Abstraction has 14120 states and 22512 transitions. [2025-03-03 14:15:47,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2025-03-03 14:15:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 14120 states and 22512 transitions. [2025-03-03 14:15:47,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2025-03-03 14:15:47,575 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:47,575 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:47,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-03-03 14:15:47,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-03-03 14:15:47,776 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:47,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -591639968, now seen corresponding path program 1 times [2025-03-03 14:15:47,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:47,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86180853] [2025-03-03 14:15:47,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:47,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:47,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 370 statements into 1 equivalence classes. [2025-03-03 14:15:47,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 370 of 370 statements. [2025-03-03 14:15:47,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:47,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2025-03-03 14:15:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86180853] [2025-03-03 14:15:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86180853] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872784029] [2025-03-03 14:15:48,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:48,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:48,104 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:48,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-03-03 14:15:48,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 370 statements into 1 equivalence classes. [2025-03-03 14:15:48,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 370 of 370 statements. [2025-03-03 14:15:48,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:48,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:48,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 3216 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 14:15:48,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-03-03 14:15:48,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:48,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872784029] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:48,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:48,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2025-03-03 14:15:48,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028051383] [2025-03-03 14:15:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:48,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 14:15:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:48,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 14:15:48,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:15:48,506 INFO L87 Difference]: Start difference. First operand 14120 states and 22512 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2025-03-03 14:15:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:49,548 INFO L93 Difference]: Finished difference Result 33768 states and 54390 transitions. [2025-03-03 14:15:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 14:15:49,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 370 [2025-03-03 14:15:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:49,630 INFO L225 Difference]: With dead ends: 33768 [2025-03-03 14:15:49,631 INFO L226 Difference]: Without dead ends: 23944 [2025-03-03 14:15:49,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:15:49,657 INFO L435 NwaCegarLoop]: 962 mSDtfsCounter, 875 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:49,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1759 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:15:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23944 states. [2025-03-03 14:15:50,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23944 to 23928. [2025-03-03 14:15:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23928 states, 18341 states have (on average 1.5446267924322556) internal successors, (28330), 19012 states have internal predecessors, (28330), 4089 states have call successors, (4089), 996 states have call predecessors, (4089), 1497 states have return successors, (6050), 4135 states have call predecessors, (6050), 4085 states have call successors, (6050) [2025-03-03 14:15:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23928 states to 23928 states and 38469 transitions. [2025-03-03 14:15:50,782 INFO L78 Accepts]: Start accepts. Automaton has 23928 states and 38469 transitions. Word has length 370 [2025-03-03 14:15:50,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:50,782 INFO L471 AbstractCegarLoop]: Abstraction has 23928 states and 38469 transitions. [2025-03-03 14:15:50,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2025-03-03 14:15:50,783 INFO L276 IsEmpty]: Start isEmpty. Operand 23928 states and 38469 transitions. [2025-03-03 14:15:50,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2025-03-03 14:15:50,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:50,791 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:50,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-03-03 14:15:50,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-03-03 14:15:50,991 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:50,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1410474317, now seen corresponding path program 1 times [2025-03-03 14:15:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967733155] [2025-03-03 14:15:50,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:51,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-03-03 14:15:51,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-03-03 14:15:51,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:51,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 2 proven. 66 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2025-03-03 14:15:51,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:15:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967733155] [2025-03-03 14:15:51,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967733155] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:15:51,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251295181] [2025-03-03 14:15:51,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:51,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:15:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:15:51,346 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 14:15:51,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-03-03 14:15:51,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-03-03 14:15:51,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-03-03 14:15:51,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:51,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:15:51,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 3383 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 14:15:51,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:15:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2025-03-03 14:15:51,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:15:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251295181] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:15:51,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 14:15:51,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-03-03 14:15:51,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669828148] [2025-03-03 14:15:51,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:15:51,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 14:15:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:15:51,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 14:15:51,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:15:51,763 INFO L87 Difference]: Start difference. First operand 23928 states and 38469 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2025-03-03 14:15:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:15:53,039 INFO L93 Difference]: Finished difference Result 48612 states and 79464 transitions. [2025-03-03 14:15:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:15:53,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 380 [2025-03-03 14:15:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:15:53,190 INFO L225 Difference]: With dead ends: 48612 [2025-03-03 14:15:53,190 INFO L226 Difference]: Without dead ends: 24828 [2025-03-03 14:15:53,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:15:53,283 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 144 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:15:53,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2428 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:15:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24828 states. [2025-03-03 14:15:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24828 to 24708. [2025-03-03 14:15:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24708 states, 19101 states have (on average 1.5596042092037066) internal successors, (29790), 19772 states have internal predecessors, (29790), 4089 states have call successors, (4089), 1016 states have call predecessors, (4089), 1517 states have return successors, (6050), 4135 states have call predecessors, (6050), 4085 states have call successors, (6050) [2025-03-03 14:15:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24708 states to 24708 states and 39929 transitions. [2025-03-03 14:15:54,644 INFO L78 Accepts]: Start accepts. Automaton has 24708 states and 39929 transitions. Word has length 380 [2025-03-03 14:15:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:15:54,645 INFO L471 AbstractCegarLoop]: Abstraction has 24708 states and 39929 transitions. [2025-03-03 14:15:54,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2025-03-03 14:15:54,645 INFO L276 IsEmpty]: Start isEmpty. Operand 24708 states and 39929 transitions. [2025-03-03 14:15:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2025-03-03 14:15:54,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:15:54,653 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:15:54,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-03-03 14:15:54,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-03-03 14:15:54,854 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:15:54,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:15:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash -838883834, now seen corresponding path program 1 times [2025-03-03 14:15:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:15:54,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291663297] [2025-03-03 14:15:54,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:15:54,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:15:54,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 248 statements into 1 equivalence classes. [2025-03-03 14:15:54,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 248 of 248 statements. [2025-03-03 14:15:54,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:15:54,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat